Year	Number of
1990	1715.3
1991	1800.66
1992	1849.44
1993	1901.96
1994	1939.01
1995	1916.93
1996	2041.81
1997	2085.37
1998	2130.86
1999	2165.39
2000	2170.6
2001	2203.67
2002	2218.1
2003	2154.37
2004	2206.52
2005	2271.38
2006	2315.39
2007	2358.72
2008	2418.04
2009	2459.87
2010	2531.28
2011	2583.72
2012	2627.84
2013	2673.72
2014	2730.14
2015	2802.7
2016	2854.04