Year	Number of
1990	2259.52
1991	2218.98
1992	2175.2
1993	2140.01
1994	2114.33
1995	2093.29
1996	2030.01
1997	2016.34
1998	2000.36
1999	1972.3
2000	1955.49
2001	1923.78
2002	1909.03
2003	1900.89
2004	1904.28
2005	1934.32
2006	1946.37
2007	1995.83
2008	2036.87
2009	2067.46
2010	2083.96
2011	2115.49
2012	2145.6
2013	2155.28
2014	2172.99
2015	2208.77
2016	2248.54