Year	Number of
1990	2222.21
1991	2211.63
1992	2232.16
1993	2243.08
1994	2293.32
1995	2327.8
1996	2265.65
1997	2161.65
1998	2050.49
1999	1982.2
2000	1916.9
2001	1890.22
2002	1861.87
2003	1873.27
2004	1928.57
2005	1966.87
2006	1963.36
2007	1925.08
2008	1817.06
2009	1731.31
2010	1678.2
2011	1628.95
2012	1581.76
2013	1513.69
2014	1442.8
2015	1406.27
2016	1446.62