Year	Number of
1990	1763.28
1991	1840.94
1992	1896.09
1993	1944.68
1994	1996.03
1995	2049.7
1996	2096.11
1997	2147.12
1998	2200.27
1999	2251.12
2000	2302.76
2001	2349.24
2002	2399.53
2003	2454.19
2004	2509.54
2005	2566.94
2006	2596.83
2007	2623.53
2008	2648.02
2009	2671.91
2010	2696.87
2011	2766.03
2012	2834.92
2013	2908.16
2014	2983.68
2015	3060.53
2016	3139.37