Year	Number of
1990	1611
1991	1673.11
1992	1735.15
1993	1804.95
1994	1880.15
1995	1951.78
1996	2006.93
1997	2062.96
1998	2101.94
1999	2160.98
2000	2241.87
2001	2316.5
2002	2401.23
2003	2459.47
2004	2541.76
2005	2631.73
2006	2710.83
2007	2812.42
2008	2886.83
2009	2958.48
2010	3051.29
2011	3125.14
2012	3202.2
2013	3243.37
2014	3326.55
2015	3391.68
2016	3465.12