Year	Number of
1990	30192.67
1991	30412.79
1992	30805.4
1993	30963.9
1994	31240.75
1995	31588.91
1996	32044.41
1997	32525.12
1998	32798.47
1999	32849.8
2000	32902.87
2001	32879.06
2002	32942.7
2003	32822.47
2004	32992.72
2005	33454.88
2006	33119.19
2007	33033.95
2008	33165.8
2009	33281.52
2010	33652.04
2011	33906.92
2012	34005.3
2013	34556.62
2014	35087.32
2015	35547.01
2016	35509.56