Year	Number of
1990	814.36
1991	840.65
1992	866.23
1993	889.72
1994	876.16
1995	882.03
1996	898.39
1997	910.92
1998	935.61
1999	933.92
2000	955.13
2001	958.04
2002	983.56
2003	988.55
2004	989.08
2005	984.71
2006	996.25
2007	1003.9
2008	1008.74
2009	1036.58
2010	1052.17
2011	1066.72
2012	1072.12
2013	1087.28
2014	1098.87
2015	1122.15
2016	1161.77