Year	Number of
1990	1022.78
1991	1069.2
1992	1147.77
1993	1224.35
1994	1295.81
1995	1383.7
1996	1400.66
1997	1512.42
1998	1614.37
1999	1731.17
2000	1859.08
2001	1888.51
2002	1935.78
2003	1989.4
2004	2001.9
2005	2024.14
2006	2023.85
2007	2044.11
2008	2071.37
2009	2094.18
2010	2125.57
2011	2144.49
2012	2167.78
2013	2187.77
2014	2208.05
2015	2227.79
2016	2249.71