Year	Number of
1990	282.27
1991	292.05
1992	301.67
1993	309.59
1994	318.18
1995	330.2
1996	345.67
1997	352.35
1998	354.48
1999	347.06
2000	332.02
2001	335.69
2002	332.6
2003	348.24
2004	339.08
2005	334.88
2006	332.38
2007	331.67
2008	339.95
2009	344.81
2010	356.44
2011	365.37
2012	373.55
2013	366.14
2014	385.69
2015	382.44
2016	380.43