Year	Number of
1990	2938.02
1991	3052.8
1992	3168.66
1993	3286.67
1994	3413.74
1995	3553.94
1996	3689.74
1997	3837.83
1998	3997.74
1999	4167.37
2000	4347.17
2001	4489.66
2002	4636.04
2003	4790.21
2004	4951.06
2005	5125.33
2006	5343.68
2007	5569.97
2008	5804.07
2009	6046.15
2010	6303.49
2011	6611.1
2012	6937.35
2013	7266.52
2014	7623.18
2015	8012.39
2016	8434.63