Year	Number of
1990	334.79
1991	331.35
1992	340.66
1993	359.33
1994	382.79
1995	372.19
1996	346.8
1997	350.02
1998	369.57
1999	357.01
2000	344.94
2001	368.4
2002	362.94
2003	381.98
2004	378.99
2005	382.38
2006	403.94
2007	400.27
2008	382.92
2009	378.57
2010	372.03
2011	370.84
2012	364.15
2013	371.1
2014	356.27
2015	354.72
2016	354.41