Year	Number of
1990	771.52
1991	751.47
1992	732.27
1993	711.34
1994	691.15
1995	680.29
1996	652.43
1997	650.44
1998	651.63
1999	639.6
2000	631.65
2001	619.13
2002	612.58
2003	607.98
2004	606.88
2005	615.9
2006	619.3
2007	636.09
2008	650.65
2009	661.86
2010	670.48
2011	679.12
2012	685.27
2013	689.58
2014	694.19
2015	711.36
2016	730.17