<Table> The 100 (novel series) <Tr> <Td_colspan="2"> The 100's first edition cover </Td> </Tr> <Tr> <Td_colspan="2"> The 100 Day 21 Homecoming Rebellion </Td> </Tr> <Tr> <Th> Author </Th> <Td> Kass Morgan </Td> </Tr> <Tr> <Th> Country </Th> <Td> United States </Td> </Tr> <Tr> <Th> Language </Th> <Td> English </Td> </Tr> <Tr> <Th> Publisher </Th> <Td> Little, Brown Books for Young Readers </Td> </Tr> <Tr> <Th> Published </Th> <Td> September 3, 2013 September 25, 2014 February 26, 2015 December 6, 2016 </Td> </Tr> <Tr> <Th> Media type </Th> <Td> Print (hardcover, paperback) </Td> </Tr> <Tr> <Th> No. of books </Th> <Td> </Td> </Tr> </Table> <Tr> <Td_colspan="2"> The 100's first edition cover </Td> </Tr>

How many books are in the 100 series by kass morgan
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