<Tr> <Td> 2014 </Td> <Td> March 9 </Td> <Td> November 2 </Td> </Tr> <Tr> <Td> 2015 </Td> <Td> March 8 </Td> <Td> November 1 </Td> </Tr> <Tr> <Td> 2016 </Td> <Td> March 13 </Td> <Td> November 6 </Td> </Tr> <Tr> <Td> 2017 </Td> <Td> March 12 </Td> <Td> November 5 </Td> </Tr>

How many states don't do the time change