Year	Number of
1990	1628.39
1991	1666.22
1992	1726.83
1993	1781.97
1994	1847.01
1995	1905.86
1996	1941.45
1997	1997.22
1998	2029.82
1999	2048.32
2000	2064.82
2001	2087.89
2002	2139.19
2003	2188.58
2004	2223.64
2005	2277.18
2006	2287.84
2007	2295.63
2008	2343.42
2009	2403.7
2010	2419.46
2011	2475.7
2012	2544.08
2013	2674.14
2014	2779.56
2015	2868.58
2016	3016.81