Year	Number of
1990	2676.34
1991	2809.2
1992	2950.44
1993	3109.77
1994	3300.23
1995	3528.63
1996	3621.77
1997	3728.89
1998	3843.58
1999	3961.02
2000	4081.98
2001	4163.85
2002	4254.51
2003	4355.41
2004	4461.93
2005	4577.69
2006	4698.18
2007	4822.78
2008	4941.71
2009	5154.38
2010	5340.13
2011	5598.4
2012	5898.42
2013	6221.73
2014	6564.73
2015	6933.97
2016	7318.72