Year	Number of
1990	1045.06
1991	1088.85
1992	1136.56
1993	1186.87
1994	1237.94
1995	1288.67
1996	1357.66
1997	1423.97
1998	1492.65
1999	1567.26
2000	1651.74
2001	1691.07
2002	1748.16
2003	1811.91
2004	1877.81
2005	1942.14
2006	2033.39
2007	2120.61
2008	2207.27
2009	2299.9
2010	2404.3
2011	2455.76
2012	2517.81
2013	2588.99
2014	2662.55
2015	2733.66
2016	2775.43