Year	Number of
1990	1881.35
1991	1911.73
1992	1958.57
1993	1982.32
1994	1987.15
1995	1992.12
1996	1970.04
1997	1957.37
1998	1924.84
1999	1927.81
2000	1896.59
2001	1888.96
2002	1884.31
2003	1865.02
2004	1857.85
2005	1855.37
2006	1839.82
2007	1835.68
2008	1844.45
2009	1852.06
2010	1865.31
2011	1871.87
2012	1891.19
2013	1905.23
2014	1922.16
2015	2009.35
2016	2078.59