Year	Number of
1990	10361.23
1991	10230.95
1992	9986.73
1993	9875.13
1994	9633.1
1995	9447.7
1996	9290.23
1997	9007.74
1998	8834.01
1999	8521.53
2000	8301.85
2001	8079.91
2002	7927.41
2003	7915.21
2004	7525.91
2005	7510.87
2006	7448.28
2007	7412.11
2008	7395.39
2009	7476.64
2010	7448.95
2011	7443.52
2012	7408.73
2013	7277.38
2014	7388.89
2015	7514.62
2016	7650.64