Year	Number of
1990	1336.17
1991	1388.85
1992	1431.26
1993	1457.15
1994	1506.85
1995	1576.13
1996	1717.84
1997	1607.5
1998	1657.12
1999	1665.16
2000	1713.29
2001	1816.64
2002	1847.59
2003	1939.84
2004	1956.9
2005	1982.28
2006	2051.01
2007	2133.23
2008	2209.97
2009	2267.03
2010	2323.12
2011	2396.79
2012	2494.45
2013	2547.51
2014	2619.2
2015	2710.61
2016	2788.33