Year	Number of
1990	747.28
1991	760.59
1992	836.23
1993	832.09
1994	869.97
1995	798.76
1996	786.64
1997	777.61
1998	788.29
1999	811.03
2000	818.38
2001	811.43
2002	830.55
2003	876.75
2004	888.73
2005	908.84
2006	930.21
2007	949.1
2008	982.28
2009	974.47
2010	984.15
2011	957.2
2012	959.55
2013	974.75
2014	994.87
2015	1024.13
2016	1034.05