Year	Number of
1990	632.55
1991	662.56
1992	663.61
1993	704.25
1994	729.05
1995	706.34
1996	618.97
1997	613.84
1998	631.96
1999	596.16
2000	583.25
2001	604.41
2002	597
2003	576.37
2004	572.47
2005	559.11
2006	566.94
2007	579.69
2008	536.19
2009	510.96
2010	474.74
2011	470.57
2012	476.68
2013	432.97
2014	455.04
2015	442.4
2016	435.75