Year	Number of
1990	947.55
1991	960.89
1992	972.53
1993	1004.12
1994	1031.09
1995	1045.09
1996	1085.25
1997	1119.39
1998	1139.61
1999	1192.3
2000	1216.08
2001	1379.02
2002	1517.35
2003	1649.99
2004	1765.43
2005	1863.53
2006	2060.45
2007	2237.57
2008	2448.48
2009	2727.66
2010	2751.66
2011	2736.39
2012	2799.78
2013	2777.94
2014	2828.54
2015	2870.94
2016	2906.09