Year	Number of
1990	10145.36
1991	10142.87
1992	10449.43
1993	11310.78
1994	11726.42
1995	11215.79
1996	10239.55
1997	9582.14
1998	9171.65
1999	9161.72
2000	9095.31
2001	9130.65
2002	9195.08
2003	9212.22
2004	9162.11
2005	9242.05
2006	8980.32
2007	8992.7
2008	9178.74
2009	9041.5
2010	9127.81
2011	9087.95
2012	9056.27
2013	9126.7
2014	9281.2
2015	9442.84
2016	9749.15