Year	Number of
1990	7823.27
1991	7983.79
1992	8153.23
1993	8324.14
1994	8499.85
1995	8686.6
1996	8758.23
1997	8836.41
1998	8918.85
1999	9000.48
2000	9072.63
2001	9132.13
2002	9191.08
2003	9249.32
2004	9317.54
2005	9401.23
2006	9497.99
2007	9601.87
2008	9704.4
2009	9812.81
2010	9936.21
2011	10033.17
2012	10103.26
2013	10162.09
2014	10231.59
2015	10303.47
2016	10392.27
