Year	Number of
1990	884.89
1991	888.93
1992	931.18
1993	914.83
1994	917.68
1995	858.07
1996	829.65
1997	813.21
1998	800.63
1999	803.83
2000	800.47
2001	803.31
2002	818.08
2003	848.32
2004	859.35
2005	872.88
2006	907.66
2007	941.17
2008	1008.39
2009	1051.36
2010	1112.16
2011	1137.64
2012	1179.78
2013	1227.47
2014	1279.3
2015	1340.82
2016	1381.54