Year	Number of
1990	627.38
1991	685.86
1992	748.35
1993	815.4
1994	890.33
1995	975.74
1996	1036.69
1997	1104.19
1998	1183.06
1999	1267.52
2000	1358.3
2001	1418.45
2002	1482.48
2003	1555.43
2004	1632.77
2005	1713.69
2006	1846.41
2007	1988.65
2008	2137.77
2009	2298.23
2010	2473.62
2011	2649.65
2012	2846.95
2013	3061.19
2014	3300.13
2015	3565.99
2016	3861.57