Year	Number of
1990	8526.61
1991	8972.17
1992	9444.92
1993	9903.88
1994	10336.04
1995	10777.15
1996	10542.95
1997	10337.19
1998	10125.02
1999	9900.38
2000	9673.96
2001	9864.76
2002	10064.17
2003	10218.84
2004	10362.55
2005	10494.85
2006	10426.91
2007	10375.29
2008	10306.91
2009	10269.76
2010	10249.73
2011	10265.68
2012	10317.55
2013	10363.06
2014	10534.06
2015	10735.19
2016	10965