Year	Number of
1990	1192.22
1991	1219.52
1992	1273.65
1993	1293.26
1994	1330.68
1995	1385.65
1996	1449.4
1997	1487.79
1998	1517.86
1999	1525.84
2000	1566.07
2001	1619.65
2002	1641.26
2003	1695.45
2004	1733.01
2005	1757.84
2006	1804.22
2007	1853.72
2008	1929.52
2009	1978.27
2010	2031.49
2011	2018.26
2012	2076.08
2013	2110.6
2014	2161.85
2015	2158.95
2016	2180.88