Year	Number of
1990	641.16
1991	696.1
1992	737.89
1993	767.06
1994	789.31
1995	826.4
1996	873.56
1997	904.74
1998	924.82
1999	990.29
2000	1040.08
2001	1087.78
2002	1148.24
2003	1150.74
2004	1220.2
2005	1243.69
2006	1336.6
2007	1347.1
2008	1418.25
2009	1508.21
2010	1543.29
2011	1559.44
2012	1625.59
2013	1665.5
2014	1709.34
2015	1767.61
2016	1830.2