Year	Number of
1990	8701.13
1991	9026.13
1992	9186.78
1993	9322.49
1994	9185.44
1995	9065
1996	8462.24
1997	7770.95
1998	7050.1
1999	6918.52
2000	6758.57
2001	6477.81
2002	6335.18
2003	6259.57
2004	6249.67
2005	6343.3
2006	6114.92
2007	6303.27
2008	6356.45
2009	5869.05
2010	5618.33
2011	5377.67
2012	5489.66
2013	5461.93
2014	5136.14
2015	5202.46
2016	5317.25