<Table> <Tr> <Td> </Td> <Td> 2011 </Td> <Td> 2012 </Td> <Td> 2013 </Td> <Td> 2014 </Td> <Td> 2015 </Td> <Td> 2016 </Td> <Td> 2017 </Td> <Td> 2018 </Td> <Td> 2019 </Td> </Tr> </Table> <Tr> <Td> </Td> <Td> 2011 </Td> <Td> 2012 </Td> <Td> 2013 </Td> <Td> 2014 </Td> <Td> 2015 </Td> <Td> 2016 </Td> <Td> 2017 </Td> <Td> 2018 </Td> <Td> 2019 </Td> </Tr> <Tr> <Td_colspan="2"> <Table> <Tr> <Td_colspan="2"> Expansion drafts </Td> </Tr> <Tr> <Td_colspan="2"> <Table> <Tr> <Td> </Td> <Td> <P> 1961 </P> </Td> <Td> <P> 1966 </P> </Td> <Td> <P> 1967 </P> </Td> <Td> <P> 1968 </P> </Td> <Td> <P> 1970 </P> </Td> <Td> <P> </P> </Td> <Td> <P> 1980 </P> </Td> <Td> <P> 1988 </P> </Td> <Td> <P> 1989 </P> </Td> <Td> <P> 1995 </P> </Td> <Td> <P> </P> </Td> </Tr> </Table> </Td> </Tr> </Table> </Td> </Tr> <Table> <Tr> <Td_colspan="2"> Expansion drafts </Td> </Tr> <Tr> <Td_colspan="2"> <Table> <Tr> <Td> </Td> <Td> <P> 1961 </P> </Td> <Td> <P> 1966 </P> </Td> <Td> <P> 1967 </P> </Td> <Td> <P> 1968 </P> </Td> <Td> <P> 1970 </P> </Td> <Td> <P> </P> </Td> <Td> <P> 1980 </P> </Td> <Td> <P> 1988 </P> </Td> <Td> <P> 1989 </P> </Td> <Td> <P> 1995 </P> </Td> <Td> <P> </P> </Td> </Tr> </Table> </Td> </Tr> </Table>

When were freshmen allowed to play college basketball