Year	Number of
1990	2006.83
1991	1981.83
1992	1939.84
1993	1914.43
1994	1895.8
1995	1888
1996	1869.19
1997	1865.71
1998	1865.73
1999	1879.74
2000	1887.56
2001	1900.83
2002	1908.92
2003	1933.93
2004	1971.96
2005	1978.78
2006	1961.57
2007	1965.02
2008	1980.98
2009	1964.09
2010	1963.79
2011	1985.87
2012	1992.62
2013	1987.67
2014	1983.54
2015	2013.03
2016	2033.95