Year	Number of
1990	4569.02
1991	4776.86
1992	4807.54
1993	4811.11
1994	4932.14
1995	5080
1996	5184.58
1997	5350.88
1998	5306.63
1999	5281.02
2000	5244
2001	5225.01
2002	5183.02
2003	5194.94
2004	5255.36
2005	5402.58
2006	5518.42
2007	5625.03
2008	5655.3
2009	5757.72
2010	5657.6
2011	5772.99
2012	5911.18
2013	5922.75
2014	5848.7
2015	5795.77
2016	5788.12