Year	Number of
1990	1821.12
1991	1876.56
1992	1953.45
1993	2027.45
1994	2117.48
1995	2186.4
1996	2225.55
1997	2312.7
1998	2364.53
1999	2391.99
2000	2440.58
2001	2426.88
2002	2660.02
2003	2679.64
2004	2695.16
2005	2695.78
2006	2685.61
2007	2708.84
2008	2755.95
2009	2795.41
2010	2852.78
2011	2909.66
2012	2974.81
2013	3050.13
2014	3131.91
2015	3216.12
2016	3305.85