Year	Number of
1990	11377.59
1991	11859.87
1992	12325.18
1993	12378.65
1994	12461.17
1995	12668.87
1996	12018.5
1997	11040.72
1998	10075.37
1999	10011.4
2000	9872.54
2001	9512.61
2002	9247.51
2003	9113.24
2004	9159.1
2005	9214.61
2006	8771.39
2007	8967.85
2008	8938.05
2009	7998.69
2010	7574.99
2011	7301.29
2012	7456.59
2013	7409.96
2014	7154.34
2015	7227.68
2016	7341.16