Year	Number of
1990	7045.69
1991	7265.83
1992	7447.29
1993	7665.29
1994	7803.8
1995	7931.78
1996	7557.3
1997	7066.92
1998	6523.21
1999	6462.36
2000	6326.58
2001	6088.66
2002	6032
2003	5979.24
2004	6031.07
2005	6224.01
2006	5952.08
2007	6077.56
2008	6016.79
2009	5431.29
2010	5108.08
2011	4866.9
2012	4955.09
2013	5035.76
2014	4883.36
2015	4872.9
2016	4970.7