Year	Number of
1990	6183.02
1991	6273.1
1992	6487.27
1993	6609.08
1994	6754.06
1995	6966.5
1996	7078.87
1997	7249.02
1998	7421.62
1999	7623.76
2000	7711.07
2001	7749.08
2002	7796.47
2003	7900.53
2004	7989.09
2005	8043.9
2006	8131.54
2007	8219.49
2008	8292.21
2009	8407.19
2010	8506.19
2011	8584.45
2012	8661.54
2013	8719.06
2014	8835.23
2015	8960.78
2016	9058.96