Year	Number of
1990	1190.76
1991	1242.53
1992	1294.54
1993	1347.45
1994	1402.93
1995	1462.78
1996	1506.62
1997	1554.76
1998	1606.35
1999	1659.92
2000	1716.27
2001	1749.61
2002	1784.89
2003	1823.2
2004	1863.47
2005	1907.34
2006	1938.07
2007	1968.93
2008	2005.12
2009	2043.43
2010	2085.37
2011	2116.08
2012	2149.99
2013	2186.15
2014	2222.95
2015	2259.85
2016	2295.15