Year	Number of
1990	910.53
1991	932.06
1992	965
1993	1006.66
1994	1054.34
1995	1113.37
1996	1163.25
1997	1212.43
1998	1276.92
1999	1345.98
2000	1421.57
2001	1482.86
2002	1527.32
2003	1568.57
2004	1602.82
2005	1643.33
2006	1680.7
2007	1709.27
2008	1731.07
2009	1754.01
2010	1780.61
2011	1800.19
2012	1834.6
2013	1849.49
2014	1860.2
2015	1890.55
2016	1957.25