Year	Number of
1990	435.25
1991	394.05
1992	450.99
1993	488.99
1994	521.52
1995	550.85
1996	582.22
1997	602.18
1998	629.37
1999	643.55
2000	653.85
2001	673.03
2002	679.1
2003	708.75
2004	719.86
2005	719.04
2006	718.41
2007	724.57
2008	725.76
2009	728.33
2010	733.77
2011	732.08
2012	725.61
2013	716.82
2014	720.94
2015	733.89
2016	749.89