Year	Number of
1990	7286.83
1991	7244.08
1992	7226.79
1993	7218.68
1994	7176.68
1995	7127.38
1996	7051.01
1997	6965.41
1998	6946.6
1999	6898.76
2000	6849.59
2001	6789.02
2002	6713.7
2003	6577.95
2004	6456.99
2005	6341.06
2006	6161.91
2007	6059.72
2008	5990.46
2009	5934.44
2010	5940.34
2011	5994.94
2012	6132.38
2013	6285.95
2014	6432.65
2015	6579.03
2016	6786.22