<Tr> <Th> Italy (FIMI) </Th> <Td> 65 </Td> </Tr> <Tr> <Th> Slovenia (SloTop50) </Th> <Td> 24 </Td> </Tr> <Tr> <Th> Sweden (Sverigetopplistan) </Th> <Td> 24 </Td> </Tr> <Tr> <Th> US Billboard Hot 100 </Th> <Td> 31 </Td> </Tr>

Who sang these are the best days of my life