Year	Number of
1990	929.43
1991	950.47
1992	969.83
1993	987.59
1994	1007.16
1995	1030.44
1996	1047.39
1997	1067.22
1998	1094.08
1999	1121.57
2000	1150.4
2001	1180.06
2002	1211.74
2003	1249.2
2004	1288.3
2005	1328.74
2006	1398.93
2007	1472.55
2008	1548.19
2009	1628.55
2010	1715.96
2011	1786.34
2012	1866.16
2013	1950.39
2014	2043.43
2015	2145.19
2016	2258.63