Year	Number of
1990	9291.41
1991	9034.04
1992	8713.9
1993	8540.15
1994	8256.07
1995	8101.63
1996	7984.96
1997	7848.63
1998	7915.49
1999	7865.09
2000	7761.68
2001	7667.85
2002	7654.62
2003	7568.6
2004	7529.19
2005	7519.86
2006	7435.91
2007	7440.54
2008	7379.23
2009	7397.84
2010	7404.87
2011	7394.5
2012	7447.01
2013	7459.8
2014	7414.08
2015	7556.09
2016	7707.65