Year	Number of
1990	6810.49
1991	7116.07
1992	7259.12
1993	7407.86
1994	7470.05
1995	7602.39
1996	7305.96
1997	6986.33
1998	6596.86
1999	6718.34
2000	6713.73
2001	6576.61
2002	6530.66
2003	6522.59
2004	6517.82
2005	6542.2
2006	6280.49
2007	6433.7
2008	6468.71
2009	6057.96
2010	5889.14
2011	5738.07
2012	5883.49
2013	5870.66
2014	5622.75
2015	5673.14
2016	5790.67