Year	Number of
1990	735.45
1991	750.79
1992	772.13
1993	799.29
1994	799.59
1995	814
1996	813.31
1997	829.34
1998	841.66
1999	848.01
2000	852.29
2001	860.11
2002	868.56
2003	901.47
2004	911.13
2005	917.87
2006	925.92
2007	917.31
2008	902.79
2009	882.66
2010	876.55
2011	856.68
2012	855.26
2013	843.62
2014	819.44
2015	838.08
2016	823.85