Year	Number of
1990	1339.37
1991	1302.5
1992	1319.53
1993	1344.68
1994	1371.52
1995	1442.55
1996	1456.11
1997	1475.83
1998	1579.11
1999	1678.68
2000	1759.9
2001	1878.7
2002	2033.16
2003	2129.79
2004	2299.32
2005	2202.6
2006	2167.32
2007	2111.46
2008	2133.61
2009	2173.65
2010	2134.89
2011	2090.34
2012	2061.97
2013	2044.93
2014	2117.69
2015	2128.21
2016	2152.04