Year	Number of
1990	9486.48
1991	9476.76
1992	9673.13
1993	9857.2
1994	9941.73
1995	10086.22
1996	10077.3
1997	10140.54
1998	10213.26
1999	10167.77
2000	9915.51
2001	9788.23
2002	9733.88
2003	9710.86
2004	9530.24
2005	9599.75
2006	9468.48
2007	9339.25
2008	9499.94
2009	9809.88
2010	9640.17
2011	9599.38
2012	9736.37
2013	10054.8
2014	10299.83
2015	10249.21
2016	10517.12