<Tr> <Th> </Th> <Td> Virginia Tech shooting </Td> <Td> 2007 </Td> <Td> 33 (inc . the perp .) </Td> <Td> 23 </Td> <Td> Semi-automatic pistols </Td> <Td> </Td> </Tr> <Tr> <Th> </Th> <Td> Sandy Hook Elementary School shooting </Td> <Td> 2012 </Td> <Td> 28 (inc . the perp .) </Td> <Td> </Td> <Td> Semi-automatic rifle and pistol </Td> <Td> </Td> </Tr> <Tr> <Th> 5 </Th> <Td> Sutherland Springs church shooting </Td> <Td> 2017 </Td> <Td> 27 (inc . the perp .) </Td> <Td> 20 </Td> <Td> Semi-automatic rifle </Td> <Td> </Td> </Tr> <Tr> <Th> 6 </Th> <Td> Luby's shooting </Td> <Td> 1991 </Td> <Td> 24 (inc . the perp .) </Td> <Td> 27 </Td> <Td> Semi-automatic pistols </Td> <Td> </Td> </Tr>

How many mass shootings have we had in the united states this year