Year	Number of
1990	594.56
1991	610.81
1992	627.88
1993	644.78
1994	675.85
1995	702.86
1996	767.96
1997	732.38
1998	754.15
1999	743.46
2000	763.75
2001	794.16
2002	797.35
2003	823.75
2004	825.54
2005	828.37
2006	848.82
2007	878.37
2008	898.86
2009	911.78
2010	922.18
2011	931.01
2012	941.55
2013	938
2014	937.66
2015	938.9
2016	942.85