Year	Number of
1990	206842.93
1991	206818.17
1992	210741.28
1993	215057.55
1994	218323.18
1995	216919.77
1996	216637.89
1997	219596.27
1998	224182.94
1999	230492.38
2000	238295.16
2001	247695.42
2002	257060.62
2003	252014.37
2004	251285.47
2005	248573.76
2006	239426.1
2007	234789.47
2008	233174.69
2009	234281.99
2010	235602.2
2011	232602.95
2012	231726.02
2013	234045.41
2014	239300.97
2015	238327.16
2016	238750.27