Year	Number of
1990	4884.8
1991	4961.92
1992	5036.49
1993	5109.6
1994	5179.04
1995	5240.28
1996	5297.03
1997	5355.03
1998	5420.08
1999	5518.48
2000	5611.42
2001	5659.59
2002	5694.83
2003	5715.16
2004	5696.48
2005	5659.16
2006	5593.28
2007	5518.74
2008	5463.75
2009	5421.42
2010	5381.2
2011	5328.3
2012	5271.09
2013	5214.55
2014	5174.41
2015	5140.76
2016	5116.68