Year	Number of
1990	12106.88
1991	11905.94
1992	11526.15
1993	11197.77
1994	10775.94
1995	10271.72
1996	10164.39
1997	9687.83
1998	9568.85
1999	9284.46
2000	9039.02
2001	8822.16
2002	8636.19
2003	8471.52
2004	8326.52
2005	8301.49
2006	8291.85
2007	8272.82
2008	8279.26
2009	8269.02
2010	8321.7
2011	8486.39
2012	8622.6
2013	8743.11
2014	8836.43
2015	9055.99
2016	9263.99