Year	Number of
1990	1300.01
1991	1343.52
1992	1419.4
1993	1493.99
1994	1564.13
1995	1648.26
1996	1667.6
1997	1749.26
1998	1814.95
1999	1888.15
2000	1969.9
2001	1993.86
2002	2026.47
2003	2071.78
2004	2084.43
2005	2101.73
2006	2108.03
2007	2132.2
2008	2160.26
2009	2193.09
2010	2229.24
2011	2250.21
2012	2275.27
2013	2303.25
2014	2330.1
2015	2357.71
2016	2387