Year	Number of
1990	986.53
1991	977.6
1992	962.08
1993	948.22
1994	940.5
1995	913.21
1996	885.79
1997	854.23
1998	827.6
1999	796.63
2000	782.07
2001	762.1
2002	744.02
2003	747.89
2004	738.21
2005	735.8
2006	741.53
2007	750.33
2008	759.75
2009	765.77
2010	773.77
2011	786.11
2012	791.43
2013	798.06
2014	813.06
2015	816.93
2016	823.84