Year	Number of
1990	9596.21
1991	9669.3
1992	9739.31
1993	9747.92
1994	9755.16
1995	9624.77
1996	9570.37
1997	9542.1
1998	9553.27
1999	9593.81
2000	9567.98
2001	9609.55
2002	9565.43
2003	9458.91
2004	9350.6
2005	9306.84
2006	9172.83
2007	9061.46
2008	9024.55
2009	8998.89
2010	9058.1
2011	9023.65
2012	9039.42
2013	9044.96
2014	9395.71
2015	9776.46
2016	10235.76