Year	Number of
1990	77508.16
1991	78691.06
1992	79914.39
1993	81110.87
1994	82168.78
1995	83267.78
1996	83685.41
1997	84179.39
1998	84721.41
1999	85134.82
2000	85516.26
2001	85010.45
2002	84611.27
2003	84260.67
2004	83971.89
2005	83798.34
2006	84316.45
2007	85030.5
2008	85765.32
2009	86591.54
2010	87494.15
2011	89230.46
2012	91106.62
2013	92965.48
2014	94576.03
2015	96339.3
2016	98117.62