Year	Number of
1990	676.73
1991	683.22
1992	692.7
1993	701.8
1994	701.71
1995	699
1996	686.55
1997	678.51
1998	662.42
1999	649.97
2000	636.91
2001	625.93
2002	630.23
2003	629.08
2004	638.05
2005	648.59
2006	655
2007	672.81
2008	686.31
2009	702.28
2010	718.15
2011	732.02
2012	746.22
2013	761.24
2014	778.52
2015	795.66
2016	811.59