Year	Number of
1990	690.63
1991	692.9
1992	697.02
1993	701.29
1994	703.53
1995	708.13
1996	708.32
1997	707.02
1998	703.65
1999	696.73
2000	694.08
2001	695.89
2002	704.31
2003	712.55
2004	726.39
2005	737.38
2006	747.24
2007	764.5
2008	770.13
2009	788.92
2010	805.21
2011	818.64
2012	833.96
2013	852.94
2014	870.65
2015	896.98
2016	921.56