<P> The Presidents Cup has been held biennially since 1994 . Initially it was held in even numbered years, with the Ryder Cup being held in odd numbered years . However, the cancellation of the 2001 Ryder Cup due to the September 11 attacks pushed both tournaments back a year, and the Presidents Cup is now held in odd numbered years . It is hosted alternately in the United States and in countries represented by the International Team . </P> <P> The scoring system of the event is match play . The format is drawn from the Ryder Cup and consists of 12 players per side . Each team has a non-playing captain, usually a highly respected golf figure, who is responsible for choosing the pairs in the doubles events, which consist of both alternate shot and best ball formats (also known as "foursome" and "fourball" matches respectively). Each match, whether it be a doubles or singles match, is worth one point with a half - point awarded to each team in the event of a halved match . </P> <P> There have been frequent small changes to the format, although the final day has always consisted of 12 singles matches . The contest was extended from three days to four in 2000 . In 2015, there were a total of 9 foursome doubles matches, 9 fourball doubles matches, and 12 singles matches . With a total of 30 points, a team needed to get 15.5 points to win the Cup . </P> <Table> <Tr> <Th> Year </Th> <Th_colspan="2"> Day 1 </Th> <Th_colspan="2"> Day 2 </Th> <Th_colspan="2"> Day 3 </Th> <Th> Day 4 </Th> <Th> Total Points </Th> </Tr> <Tr> <Th> Morning </Th> <Th> Afternoon </Th> <Th> Morning </Th> <Th> Afternoon </Th> <Th> Morning </Th> <Th> Afternoon </Th> </Tr> <Tr> <Td> 1994--1996 </Td> <Td> 5 fourballs </Td> <Td> 5 foursomes </Td> <Td> 5 fourballs </Td> <Td> 5 foursomes </Td> <Td_colspan="2"> 12 singles </Td> <Td>--</Td> <Td> 32 </Td> </Tr> <Tr> <Td> 1998 </Td> <Td> 5 foursomes </Td> <Td> 5 fourballs </Td> <Td> 5 foursomes </Td> <Td> 5 fourballs </Td> <Td_colspan="2"> 12 singles </Td> <Td>--</Td> <Td> 32 </Td> </Tr> <Tr> <Td> 2000 </Td> <Td_colspan="2"> 5 foursomes </Td> <Td> 5 fourballs </Td> <Td> 5 foursomes </Td> <Td_colspan="2"> 5 fourballs </Td> <Td> 12 singles </Td> <Td> 32 </Td> </Tr> <Tr> <Td> 2003 </Td> <Td_colspan="2"> 6 foursomes </Td> <Td> 5 fourballs </Td> <Td> 5 foursomes </Td> <Td_colspan="2"> 6 fourballs </Td> <Td> 12 singles </Td> <Td> 34 </Td> </Tr> <Tr> <Td> 2005--2011 </Td> <Td_colspan="2"> 6 foursomes </Td> <Td_colspan="2"> 6 fourballs </Td> <Td> 5 foursomes </Td> <Td> 5 fourballs </Td> <Td> 12 singles </Td> <Td> 34 </Td> </Tr> <Tr> <Td> 2013 </Td> <Td_colspan="2"> 6 fourballs </Td> <Td_colspan="2"> 6 foursomes </Td> <Td> 5 fourballs </Td> <Td> 5 foursomes </Td> <Td> 12 singles </Td> <Td> 34 </Td> </Tr> <Tr> <Td> 2015--2017 </Td> <Td_colspan="2"> 5 foursomes </Td> <Td_colspan="2"> 5 fourballs </Td> <Td> 4 foursomes </Td> <Td> 4 fourballs </Td> <Td> 12 singles </Td> <Td> 30 </Td> </Tr> </Table>

How many points does it take to win the president cup