Year	Number of
1990	557.53
1991	558.28
1992	560.32
1993	562.61
1994	584.07
1995	606.85
1996	610.82
1997	617.38
1998	636.16
1999	646.01
2000	647.59
2001	638.96
2002	642.64
2003	655.36
2004	663.15
2005	670.64
2006	691.61
2007	662.74
2008	664.71
2009	682.73
2010	692.07
2011	720.45
2012	739.69
2013	753.16
2014	764.84
2015	763.9
2016	774.89