Year	Number of
1990	2351.28
1991	2460.4
1992	2452.2
1993	2536.62
1994	2545.61
1995	2625.45
1996	2582.05
1997	2575.67
1998	2561
1999	2719.67
2000	2442.64
2001	2331.57
2002	2304.44
2003	2416.68
2004	2264.17
2005	2284.67
2006	2208.67
2007	2049.83
2008	1930.22
2009	2132.81
2010	2195.25
2011	2244.25
2012	2261.56
2013	2373.83
2014	2387.65
2015	2415.27
2016	2451.71