Year	Number of
1990	364.18
1991	366.41
1992	382.21
1993	426.71
1994	459.53
1995	446.37
1996	397.55
1997	392.83
1998	418.83
1999	412.59
2000	400.59
2001	428.35
2002	420.78
2003	432.51
2004	428.28
2005	428.92
2006	463.87
2007	447.2
2008	427.89
2009	423.8
2010	414.81
2011	408.46
2012	384.05
2013	398.23
2014	378.36
2015	367.94
2016	362.25