Year	Number of
1990	851.65
1991	886.67
1992	935.09
1993	982.92
1994	1029.69
1995	1085.63
1996	1119.9
1997	1161.16
1998	1197.88
1999	1238.26
2000	1279.79
2001	1323.45
2002	1371.57
2003	1431.16
2004	1475.93
2005	1530.34
2006	1574.27
2007	1626.46
2008	1682.65
2009	1741.6
2010	1808.28
2011	1861.71
2012	1918.75
2013	1977.47
2014	2034.51
2015	2091.05
2016	2141.01