Year	Number of
1990	745.98
1991	767.56
1992	781.49
1993	824.97
1994	870.27
1995	897.82
1996	937.75
1997	979.79
1998	1000.33
1999	1036.45
2000	1062.6
2001	1125.95
2002	1171.62
2003	1217.53
2004	1251.99
2005	1282.5
2006	1340.1
2007	1375.99
2008	1430.7
2009	1496.86
2010	1549.54
2011	1610.79
2012	1651.87
2013	1679.73
2014	1717.17
2015	1779.92
2016	1836.85