Year	Number of
1990	815.28
1991	830.15
1992	846.91
1993	865.21
1994	884.73
1995	905.67
1996	914.25
1997	924.04
1998	935.57
1999	948.02
2000	961.72
2001	962.94
2002	964.5
2003	967.63
2004	971.82
2005	977.53
2006	989.04
2007	1001.74
2008	1016.2
2009	1032.6
2010	1051.37
2011	1069.81
2012	1090.04
2013	1110.45
2014	1133.23
2015	1158.59
2016	1186.24