Year	Number of
1990	1349.92
1991	1391.82
1992	1436.41
1993	1479.6
1994	1525.29
1995	1573.93
1996	1600.56
1997	1627.41
1998	1652.7
1999	1680.31
2000	1711.03
2001	1769.81
2002	1834.17
2003	1907.88
2004	1985.73
2005	2067.48
2006	2146.65
2007	2228.7
2008	2321.7
2009	2420.39
2010	2526.18
2011	2621.28
2012	2722.46
2013	2829.49
2014	2939.92
2015	3052.74
2016	3168.13