Year	Number of
1990	697.23
1991	682.6
1992	667.83
1993	653.69
1994	639.69
1995	626.1
1996	650.02
1997	673.66
1998	696.65
1999	718.96
2000	740.85
2001	781.67
2002	823.25
2003	865.24
2004	908.72
2005	954.75
2006	943.19
2007	932.41
2008	923.57
2009	915.97
2010	909.86
2011	923.03
2012	939.2
2013	957.15
2014	977.25
2015	999.36
2016	1026.12