Year	Number of
1990	367.86
1991	395.61
1992	370.3
1993	381.46
1994	407.63
1995	398.1
1996	362.77
1997	303.57
1998	294.21
1999	297.05
2000	308.17
2001	300.85
2002	310.42
2003	323.3
2004	323.51
2005	354.31
2006	366.92
2007	377.3
2008	377.51
2009	379.62
2010	392.36
2011	359.55
2012	368.57
2013	357.87
2014	376.66
2015	382.76
2016	383.95