Year	Number of
1990	859.36
1991	842.62
1992	821.57
1993	802.07
1994	782.48
1995	778.28
1996	752.63
1997	737.57
1998	726.68
1999	694.65
2000	685.37
2001	668.17
2002	654.68
2003	646.19
2004	624.86
2005	617.13
2006	610.74
2007	614.07
2008	619.99
2009	629.45
2010	626.82
2011	635.25
2012	651.16
2013	672.91
2014	671.26
2015	691.46
2016	715.43