Year	Number of
1990	765.17
1991	797.99
1992	795.26
1993	822.05
1994	824.15
1995	847.57
1996	832.15
1997	827.93
1998	822.23
1999	862.98
2000	764.42
2001	721.14
2002	707.32
2003	737.04
2004	673.97
2005	668.74
2006	639.68
2007	588.85
2008	555.99
2009	612.59
2010	628.9
2011	638.55
2012	639.65
2013	670.94
2014	673.86
2015	677.52
2016	684.2