Year	Number of
1990	558.41
1991	572.85
1992	576.21
1993	578.99
1994	592.64
1995	609.43
1996	625.89
1997	624.09
1998	629.51
1999	635.38
2000	634.24
2001	647.81
2002	655.79
2003	659.52
2004	666.63
2005	667.16
2006	670.49
2007	672.01
2008	679.18
2009	687.43
2010	688.19
2011	692.7
2012	702.58
2013	711.87
2014	718.66
2015	734.47
2016	749.03