Year	Number of
1990	1820.1
1991	1850.2
1992	1875.99
1993	1899.78
1994	1919.14
1995	1926.35
1996	1931.75
1997	1939.88
1998	1954.03
1999	1969.45
2000	1984.96
2001	1988.1
2002	1994.72
2003	1992.62
2004	1987.3
2005	1976.33
2006	1958.54
2007	1947.35
2008	1947.67
2009	1956.69
2010	1963.73
2011	1968.25
2012	1973.52
2013	1986.19
2014	2003.92
2015	2025.64
2016	2052.7