Year	Number of
1990	2263.03
1991	2272.3
1992	2252.19
1993	2508.28
1994	2740.49
1995	2921.15
1996	3726.76
1997	3687.68
1998	3779.65
1999	3801.83
2000	3830.58
2001	3869.31
2002	3909.13
2003	3947.44
2004	3989.49
2005	4041.32
2006	4084.17
2007	4139.51
2008	4216.89
2009	4284.5
2010	4350.83
2011	4411.57
2012	4480.04
2013	4547.24
2014	4613.17
2015	4683.14
2016	4757.3