Year	Number of
1990	685.33
1991	691.36
1992	698.7
1993	707.67
1994	717.4
1995	728.08
1996	735.33
1997	744.71
1998	756.77
1999	770.24
2000	785.29
2001	778.35
2002	771.74
2003	766.53
2004	761.7
2005	757.55
2006	765.68
2007	774.27
2008	783.63
2009	793.88
2010	805.36
2011	819.39
2012	834.6
2013	849.25
2014	865.17
2015	882.41
2016	898.7