Year	Number of
1990	10243.82
1991	10205.06
1992	10133.79
1993	10061.47
1994	9890.23
1995	9782.51
1996	9643.81
1997	9476.22
1998	9308.86
1999	9177.41
2000	8962.41
2001	8936.45
2002	8921.28
2003	8870.83
2004	8759.38
2005	8708.43
2006	8654.63
2007	8631.35
2008	8592.6
2009	8506.27
2010	8531.61
2011	8590.8
2012	8754.22
2013	8856.44
2014	8938.02
2015	8994.69
2016	9045.51