Year	Number of
1990	1816.97
1991	1834.91
1992	1878.33
1993	1905.94
1994	1950.5
1995	2010.08
1996	2027.07
1997	2009.65
1998	1998.95
1999	2007.76
2000	1993.85
2001	1997.22
2002	1983.44
2003	1980.08
2004	2013.29
2005	2048.27
2006	2051.23
2007	2079.08
2008	2111.29
2009	2127.86
2010	2169.39
2011	2220.17
2012	2249.13
2013	2271.1
2014	2322.51
2015	2365.79
2016	2408.86