Year	Number of
1990	2508.97
1991	2664.06
1992	2663.98
1993	2780.1
1994	2798.23
1995	2899.53
1996	2853.45
1997	2851.78
1998	2831.88
1999	3022.92
2000	2634.13
2001	2470.97
2002	2421.89
2003	2566.47
2004	2302.34
2005	2281.38
2006	2160.32
2007	1946.67
2008	1795.62
2009	2029.65
2010	2094.48
2011	2134.88
2012	2133.23
2013	2246.35
2014	2234.6
2015	2235.73
2016	2247.32