Year	Number of
1990	2786.05
1991	2870.27
1992	2962.03
1993	3052.73
1994	3140.27
1995	3219.31
1996	3291.43
1997	3375.72
1998	3470.41
1999	3569.6
2000	3663.33
2001	3769.08
2002	3858.88
2003	3949.31
2004	4041.33
2005	4133.73
2006	4215.41
2007	4296.64
2008	4368.61
2009	4468.97
2010	4565.53
2011	4647.4
2012	4736.62
2013	4843.66
2014	4954.75
2015	5081.99
2016	5194.87