<Table> <Tr> <Td> <H3> Weekly charts (edit) </H3> <Table> <Tr> <Th> Chart (2009--10) </Th> <Th> Peak position </Th> </Tr> <Tr> <Td> Australia (ARIA) </Td> <Td> </Td> </Tr> <Tr> <Td> Austria (Ö3 Austria Top 40) </Td> <Td> </Td> </Tr> <Tr> <Td> Belgium (Ultratop 50 Flanders) </Td> <Td> </Td> </Tr> <Tr> <Td> Belgium (Ultratop 50 Wallonia) </Td> <Td> </Td> </Tr> <Tr> <Td> Brazil (Hot 100 Airplay) </Td> <Td> </Td> </Tr> <Tr> <Td> Canada (Canadian Hot 100) </Td> <Td> </Td> </Tr> <Tr> <Td> Czech Republic (Rádio Top 100) </Td> <Td> </Td> </Tr> <Tr> <Td> Denmark (Tracklisten) </Td> <Td> </Td> </Tr> <Tr> <Td> Finland (Suomen virallinen lista) </Td> <Td> 5 </Td> </Tr> <Tr> <Td> France (SNEP) </Td> <Td> </Td> </Tr> <Tr> <Td> Germany (Official German Charts) </Td> <Td> </Td> </Tr> <Tr> <Td> Greece (IFPI) </Td> <Td> </Td> </Tr> <Tr> <Td> Hungary (Rádiós Top 40) </Td> <Td> </Td> </Tr> <Tr> <Td> Ireland (IRMA) </Td> <Td> </Td> </Tr> <Tr> <Td> Israel (Media Forest) </Td> <Td> </Td> </Tr> <Tr> <Td> Italy (FIMI) </Td> <Td> </Td> </Tr> <Tr> <Td> Japan (Japan Hot 100) </Td> <Td> </Td> </Tr> <Tr> <Td> Luxembourg Digital Songs (Billboard) </Td> <Td> </Td> </Tr> <Tr> <Td> Mexico Top Inglés (Monitor Latino) </Td> <Td> </Td> </Tr> <Tr> <Td> Netherlands (Dutch Top 40) </Td> <Td> </Td> </Tr> <Tr> <Td> New Zealand (Recorded Music NZ) </Td> <Td> </Td> </Tr> <Tr> <Td> Norway (VG - lista) </Td> <Td> </Td> </Tr> <Tr> <Td> Poland (Dance Top 50) </Td> <Td> 20 </Td> </Tr> <Tr> <Td> Romania (Romanian Top 100) </Td> <Td> </Td> </Tr> <Tr> <Td> Romania (Romania Radio Airplay) </Td> <Td> </Td> </Tr> <Tr> <Td> Scotland (Official Charts Company) </Td> <Td> </Td> </Tr> <Tr> <Td> Slovakia (Rádio Top 100) </Td> <Td> </Td> </Tr> <Tr> <Td> Spain (PROMUSICAE) </Td> <Td> </Td> </Tr> <Tr> <Td> Sweden (Sverigetopplistan) </Td> <Td> </Td> </Tr> <Tr> <Td> Switzerland (Schweizer Hitparade) </Td> <Td> </Td> </Tr> <Tr> <Td> UK Singles (Official Charts Company) </Td> <Td> </Td> </Tr> <Tr> <Td> UK R&B (Official Charts Company) </Td> <Td> </Td> </Tr> <Tr> <Td> US Billboard Hot 100 </Td> <Td> </Td> </Tr> <Tr> <Td> US Adult Contemporary (Billboard) </Td> <Td> 16 </Td> </Tr> <Tr> <Td> US Adult Top 40 (Billboard) </Td> <Td> </Td> </Tr> <Tr> <Td> US Dance Club Songs (Billboard) </Td> <Td> 9 </Td> </Tr> <Tr> <Td> US Mainstream Top 40 (Billboard) </Td> <Td> </Td> </Tr> <Tr> <Td> US Rhythmic (Billboard) </Td> <Td> </Td> </Tr> </Table> <Table> <Tr> <Th> Chart (2016) </Th> <Th> Peak position </Th> </Tr> <Tr> <Td> Poland (Polish Airplay Top 100) </Td> <Td> 43 </Td> </Tr> </Table> <P> </P> </Td> <Td> <H3> Year - end charts (edit) </H3> <Table> <Tr> <Th> Chart (2009) </Th> <Th> Position </Th> </Tr> <Tr> <Th> Australia (ARIA) </Th> <Td> </Td> </Tr> <Tr> <Th> Australia Dance (ARIA) </Th> <Td> </Td> </Tr> <Tr> <Th> Austria (Ö3 Austria Top 40) </Th> <Td> </Td> </Tr> <Tr> <Th> Belgium (Ultratop 50 Flanders) </Th> <Td> </Td> </Tr> <Tr> <Th> Belgium (Ultratop 50 Wallonia) </Th> <Td> </Td> </Tr> <Tr> <Th> Canada (Canadian Hot 100) </Th> <Td> </Td> </Tr> <Tr> <Th> France (SNEP) </Th> <Td> 27 </Td> </Tr> <Tr> <Th> Germany (Media Control AG) </Th> <Td> 9 </Td> </Tr> <Tr> <Th> Hungary (Rádiós Top 40) </Th> <Td> 42 </Td> </Tr> <Tr> <Th> Ireland (IRMA) </Th> <Td> </Td> </Tr> <Tr> <Th> Italy (FIMI) </Th> <Td> </Td> </Tr> <Tr> <Th> Japan (Japan Hot 100) </Th> <Td> 20 </Td> </Tr> <Tr> <Th> Netherlands (Dutch Top 40) </Th> <Td> </Td> </Tr> <Tr> <Th> New Zealand (RIANZ) </Th> <Td> </Td> </Tr> <Tr> <Th> Spain (PROMUSICAE) </Th> <Td> 5 </Td> </Tr> <Tr> <Th> Sweden (Sverigetopplistan) </Th> <Td> 7 </Td> </Tr> <Tr> <Th> Switzerland (Schweizer Hitparade) </Th> <Td> 7 </Td> </Tr> <Tr> <Th> UK Singles (Official Charts Company) </Th> <Td> </Td> </Tr> <Tr> <Th> US Billboard Hot 100 </Th> <Td> </Td> </Tr> <Tr> <Th> Chart (2010) </Th> <Th> Position </Th> </Tr> <Tr> <Th> Australia (ARIA) </Th> <Td> 53 </Td> </Tr> <Tr> <Th> Australia Dance (ARIA) </Th> <Td> 12 </Td> </Tr> <Tr> <Th> Austria (Ö3 Austria Top 40) </Th> <Td> 68 </Td> </Tr> <Tr> <Th> Belgium (Ultratop 50 Flanders) </Th> <Td> 9 </Td> </Tr> <Tr> <Th> Belgium (Ultratop 50 Wallonia) </Th> <Td> 6 </Td> </Tr> <Tr> <Th> Canada (Canadian Hot 100) </Th> <Td> 10 </Td> </Tr> <Tr> <Th> France Digital Chart (SNEP) </Th> <Td> 10 </Td> </Tr> <Tr> <Th> Germany (Media Control AG) </Th> <Td> 46 </Td> </Tr> <Tr> <Th> Hungary (Rádiós Top 40) </Th> <Td> </Td> </Tr> <Tr> <Th> Italy (FIMI) </Th> <Td> 39 </Td> </Tr> <Tr> <Th> Netherlands (Dutch Top 40) </Th> <Td> 7 </Td> </Tr> <Tr> <Th> Spain (PROMUSICAE) </Th> <Td> 27 </Td> </Tr> <Tr> <Th> Sweden (Sverigetopplistan) </Th> <Td> 51 </Td> </Tr> <Tr> <Th> Switzerland (Schweizer Hitparade) </Th> <Td> 17 </Td> </Tr> <Tr> <Th> UK Singles (Official Charts Company) </Th> <Td> 72 </Td> </Tr> <Tr> <Th> US Billboard Hot 100 </Th> <Td> 29 </Td> </Tr> <Tr> <Th> Chart (2011) </Th> <Th> Position </Th> </Tr> <Tr> <Th> Netherlands (Mega Single Top 100) </Th> <Td> 88 </Td> </Tr> <Tr> <Th> UK Singles (Official Charts Company) </Th> <Td> 154 </Td> </Tr> <Tr> <Th> Chart (2012) </Th> <Th> Position </Th> </Tr> <Tr> <Th> Belgian Backcatalogue Singles Chart (Flanders) </Th> <Td> 7 </Td> </Tr> <Tr> <Th> Belgian Backcatalogue Singles Chart (Wallonia) </Th> <Td> 14 </Td> </Tr> </Table> <H3> Decade - end charts (edit) </H3> <Table> <Tr> <Th> Chart (2000--09) </Th> <Th> Position </Th> </Tr> <Tr> <Td> Australia (ARIA) </Td> <Td> </Td> </Tr> <Tr> <Td> UK Singles (Official Charts Company) </Td> <Td> 18 </Td> </Tr> <Tr> <Td> US Billboard Hot 100 </Td> <Td> 5 </Td> </Tr> </Table> <H3> All - time charts (edit) </H3> <Table> <Tr> <Th> Chart </Th> <Th> Position </Th> </Tr> <Tr> <Td> UK Singles (Official Charts Company) </Td> <Td> 46 </Td> </Tr> <Tr> <Td> US Billboard Hot 100 </Td> <Td> 7 </Td> </Tr> </Table> <P> </P> </Td> </Tr> </Table> <Tr> <Td> <H3> Weekly charts (edit) </H3> <Table> <Tr> <Th> Chart (2009--10) </Th> <Th> Peak position </Th> </Tr> <Tr> <Td> Australia (ARIA) </Td> <Td> </Td> </Tr> <Tr> <Td> Austria (Ö3 Austria Top 40) </Td> <Td> </Td> </Tr> <Tr> <Td> Belgium (Ultratop 50 Flanders) </Td> <Td> </Td> </Tr> <Tr> <Td> Belgium (Ultratop 50 Wallonia) </Td> <Td> </Td> </Tr> <Tr> <Td> Brazil (Hot 100 Airplay) </Td> <Td> </Td> </Tr> <Tr> <Td> Canada (Canadian Hot 100) </Td> <Td> </Td> </Tr> <Tr> <Td> Czech Republic (Rádio Top 100) </Td> <Td> </Td> </Tr> <Tr> <Td> Denmark (Tracklisten) </Td> <Td> </Td> </Tr> <Tr> <Td> Finland (Suomen virallinen lista) </Td> <Td> 5 </Td> </Tr> <Tr> <Td> France (SNEP) </Td> <Td> </Td> </Tr> <Tr> <Td> Germany (Official German Charts) </Td> <Td> </Td> </Tr> <Tr> <Td> Greece (IFPI) </Td> <Td> </Td> </Tr> <Tr> <Td> Hungary (Rádiós Top 40) </Td> <Td> </Td> </Tr> <Tr> <Td> Ireland (IRMA) </Td> <Td> </Td> </Tr> <Tr> <Td> Israel (Media Forest) </Td> <Td> </Td> </Tr> <Tr> <Td> Italy (FIMI) </Td> <Td> </Td> </Tr> <Tr> <Td> Japan (Japan Hot 100) </Td> <Td> </Td> </Tr> <Tr> <Td> Luxembourg Digital Songs (Billboard) </Td> <Td> </Td> </Tr> <Tr> <Td> Mexico Top Inglés (Monitor Latino) </Td> <Td> </Td> </Tr> <Tr> <Td> Netherlands (Dutch Top 40) </Td> <Td> </Td> </Tr> <Tr> <Td> New Zealand (Recorded Music NZ) </Td> <Td> </Td> </Tr> <Tr> <Td> Norway (VG - lista) </Td> <Td> </Td> </Tr> <Tr> <Td> Poland (Dance Top 50) </Td> <Td> 20 </Td> </Tr> <Tr> <Td> Romania (Romanian Top 100) </Td> <Td> </Td> </Tr> <Tr> <Td> Romania (Romania Radio Airplay) </Td> <Td> </Td> </Tr> <Tr> <Td> Scotland (Official Charts Company) </Td> <Td> </Td> </Tr> <Tr> <Td> Slovakia (Rádio Top 100) </Td> <Td> </Td> </Tr> <Tr> <Td> Spain (PROMUSICAE) </Td> <Td> </Td> </Tr> <Tr> <Td> Sweden (Sverigetopplistan) </Td> <Td> </Td> </Tr> <Tr> <Td> Switzerland (Schweizer Hitparade) </Td> <Td> </Td> </Tr> <Tr> <Td> UK Singles (Official Charts Company) </Td> <Td> </Td> </Tr> <Tr> <Td> UK R&B (Official Charts Company) </Td> <Td> </Td> </Tr> <Tr> <Td> US Billboard Hot 100 </Td> <Td> </Td> </Tr> <Tr> <Td> US Adult Contemporary (Billboard) </Td> <Td> 16 </Td> </Tr> <Tr> <Td> US Adult Top 40 (Billboard) </Td> <Td> </Td> </Tr> <Tr> <Td> US Dance Club Songs (Billboard) </Td> <Td> 9 </Td> </Tr> <Tr> <Td> US Mainstream Top 40 (Billboard) </Td> <Td> </Td> </Tr> <Tr> <Td> US Rhythmic (Billboard) </Td> <Td> </Td> </Tr> </Table> <Table> <Tr> <Th> Chart (2016) </Th> <Th> Peak position </Th> </Tr> <Tr> <Td> Poland (Polish Airplay Top 100) </Td> <Td> 43 </Td> </Tr> </Table> <P> </P> </Td> <Td> <H3> Year - end charts (edit) </H3> <Table> <Tr> <Th> Chart (2009) </Th> <Th> Position </Th> </Tr> <Tr> <Th> Australia (ARIA) </Th> <Td> </Td> </Tr> <Tr> <Th> Australia Dance (ARIA) </Th> <Td> </Td> </Tr> <Tr> <Th> Austria (Ö3 Austria Top 40) </Th> <Td> </Td> </Tr> <Tr> <Th> Belgium (Ultratop 50 Flanders) </Th> <Td> </Td> </Tr> <Tr> <Th> Belgium (Ultratop 50 Wallonia) </Th> <Td> </Td> </Tr> <Tr> <Th> Canada (Canadian Hot 100) </Th> <Td> </Td> </Tr> <Tr> <Th> France (SNEP) </Th> <Td> 27 </Td> </Tr> <Tr> <Th> Germany (Media Control AG) </Th> <Td> 9 </Td> </Tr> <Tr> <Th> Hungary (Rádiós Top 40) </Th> <Td> 42 </Td> </Tr> <Tr> <Th> Ireland (IRMA) </Th> <Td> </Td> </Tr> <Tr> <Th> Italy (FIMI) </Th> <Td> </Td> </Tr> <Tr> <Th> Japan (Japan Hot 100) </Th> <Td> 20 </Td> </Tr> <Tr> <Th> Netherlands (Dutch Top 40) </Th> <Td> </Td> </Tr> <Tr> <Th> New Zealand (RIANZ) </Th> <Td> </Td> </Tr> <Tr> <Th> Spain (PROMUSICAE) </Th> <Td> 5 </Td> </Tr> <Tr> <Th> Sweden (Sverigetopplistan) </Th> <Td> 7 </Td> </Tr> <Tr> <Th> Switzerland (Schweizer Hitparade) </Th> <Td> 7 </Td> </Tr> <Tr> <Th> UK Singles (Official Charts Company) </Th> <Td> </Td> </Tr> <Tr> <Th> US Billboard Hot 100 </Th> <Td> </Td> </Tr> <Tr> <Th> Chart (2010) </Th> <Th> Position </Th> </Tr> <Tr> <Th> Australia (ARIA) </Th> <Td> 53 </Td> </Tr> <Tr> <Th> Australia Dance (ARIA) </Th> <Td> 12 </Td> </Tr> <Tr> <Th> Austria (Ö3 Austria Top 40) </Th> <Td> 68 </Td> </Tr> <Tr> <Th> Belgium (Ultratop 50 Flanders) </Th> <Td> 9 </Td> </Tr> <Tr> <Th> Belgium (Ultratop 50 Wallonia) </Th> <Td> 6 </Td> </Tr> <Tr> <Th> Canada (Canadian Hot 100) </Th> <Td> 10 </Td> </Tr> <Tr> <Th> France Digital Chart (SNEP) </Th> <Td> 10 </Td> </Tr> <Tr> <Th> Germany (Media Control AG) </Th> <Td> 46 </Td> </Tr> <Tr> <Th> Hungary (Rádiós Top 40) </Th> <Td> </Td> </Tr> <Tr> <Th> Italy (FIMI) </Th> <Td> 39 </Td> </Tr> <Tr> <Th> Netherlands (Dutch Top 40) </Th> <Td> 7 </Td> </Tr> <Tr> <Th> Spain (PROMUSICAE) </Th> <Td> 27 </Td> </Tr> <Tr> <Th> Sweden (Sverigetopplistan) </Th> <Td> 51 </Td> </Tr> <Tr> <Th> Switzerland (Schweizer Hitparade) </Th> <Td> 17 </Td> </Tr> <Tr> <Th> UK Singles (Official Charts Company) </Th> <Td> 72 </Td> </Tr> <Tr> <Th> US Billboard Hot 100 </Th> <Td> 29 </Td> </Tr> <Tr> <Th> Chart (2011) </Th> <Th> Position </Th> </Tr> <Tr> <Th> Netherlands (Mega Single Top 100) </Th> <Td> 88 </Td> </Tr> <Tr> <Th> UK Singles (Official Charts Company) </Th> <Td> 154 </Td> </Tr> <Tr> <Th> Chart (2012) </Th> <Th> Position </Th> </Tr> <Tr> <Th> Belgian Backcatalogue Singles Chart (Flanders) </Th> <Td> 7 </Td> </Tr> <Tr> <Th> Belgian Backcatalogue Singles Chart (Wallonia) </Th> <Td> 14 </Td> </Tr> </Table> <H3> Decade - end charts (edit) </H3> <Table> <Tr> <Th> Chart (2000--09) </Th> <Th> Position </Th> </Tr> <Tr> <Td> Australia (ARIA) </Td> <Td> </Td> </Tr> <Tr> <Td> UK Singles (Official Charts Company) </Td> <Td> 18 </Td> </Tr> <Tr> <Td> US Billboard Hot 100 </Td> <Td> 5 </Td> </Tr> </Table> <H3> All - time charts (edit) </H3> <Table> <Tr> <Th> Chart </Th> <Th> Position </Th> </Tr> <Tr> <Td> UK Singles (Official Charts Company) </Td> <Td> 46 </Td> </Tr> <Tr> <Td> US Billboard Hot 100 </Td> <Td> 7 </Td> </Tr> </Table> <P> </P> </Td> </Tr> <Table> <Tr> <Th> Chart (2009--10) </Th> <Th> Peak position </Th> </Tr> <Tr> <Td> Australia (ARIA) </Td> <Td> </Td> </Tr> <Tr> <Td> Austria (Ö3 Austria Top 40) </Td> <Td> </Td> </Tr> <Tr> <Td> Belgium (Ultratop 50 Flanders) </Td> <Td> </Td> </Tr> <Tr> <Td> Belgium (Ultratop 50 Wallonia) </Td> <Td> </Td> </Tr> <Tr> <Td> Brazil (Hot 100 Airplay) </Td> <Td> </Td> </Tr> <Tr> <Td> Canada (Canadian Hot 100) </Td> <Td> </Td> </Tr> <Tr> <Td> Czech Republic (Rádio Top 100) </Td> <Td> </Td> </Tr> <Tr> <Td> Denmark (Tracklisten) </Td> <Td> </Td> </Tr> <Tr> <Td> Finland (Suomen virallinen lista) </Td> <Td> 5 </Td> </Tr> <Tr> <Td> France (SNEP) </Td> <Td> </Td> </Tr> <Tr> <Td> Germany (Official German Charts) </Td> <Td> </Td> </Tr> <Tr> <Td> Greece (IFPI) </Td> <Td> </Td> </Tr> <Tr> <Td> Hungary (Rádiós Top 40) </Td> <Td> </Td> </Tr> <Tr> <Td> Ireland (IRMA) </Td> <Td> </Td> </Tr> <Tr> <Td> Israel (Media Forest) </Td> <Td> </Td> </Tr> <Tr> <Td> Italy (FIMI) </Td> <Td> </Td> </Tr> <Tr> <Td> Japan (Japan Hot 100) </Td> <Td> </Td> </Tr> <Tr> <Td> Luxembourg Digital Songs (Billboard) </Td> <Td> </Td> </Tr> <Tr> <Td> Mexico Top Inglés (Monitor Latino) </Td> <Td> </Td> </Tr> <Tr> <Td> Netherlands (Dutch Top 40) </Td> <Td> </Td> </Tr> <Tr> <Td> New Zealand (Recorded Music NZ) </Td> <Td> </Td> </Tr> <Tr> <Td> Norway (VG - lista) </Td> <Td> </Td> </Tr> <Tr> <Td> Poland (Dance Top 50) </Td> <Td> 20 </Td> </Tr> <Tr> <Td> Romania (Romanian Top 100) </Td> <Td> </Td> </Tr> <Tr> <Td> Romania (Romania Radio Airplay) </Td> <Td> </Td> </Tr> <Tr> <Td> Scotland (Official Charts Company) </Td> <Td> </Td> </Tr> <Tr> <Td> Slovakia (Rádio Top 100) </Td> <Td> </Td> </Tr> <Tr> <Td> Spain (PROMUSICAE) </Td> <Td> </Td> </Tr> <Tr> <Td> Sweden (Sverigetopplistan) </Td> <Td> </Td> </Tr> <Tr> <Td> Switzerland (Schweizer Hitparade) </Td> <Td> </Td> </Tr> <Tr> <Td> UK Singles (Official Charts Company) </Td> <Td> </Td> </Tr> <Tr> <Td> UK R&B (Official Charts Company) </Td> <Td> </Td> </Tr> <Tr> <Td> US Billboard Hot 100 </Td> <Td> </Td> </Tr> <Tr> <Td> US Adult Contemporary (Billboard) </Td> <Td> 16 </Td> </Tr> <Tr> <Td> US Adult Top 40 (Billboard) </Td> <Td> </Td> </Tr> <Tr> <Td> US Dance Club Songs (Billboard) </Td> <Td> 9 </Td> </Tr> <Tr> <Td> US Mainstream Top 40 (Billboard) </Td> <Td> </Td> </Tr> <Tr> <Td> US Rhythmic (Billboard) </Td> <Td> </Td> </Tr> </Table> <Tr> <Th> Chart (2009--10) </Th> <Th> Peak position </Th> </Tr>

Who sings tonight's gonna be a good night