Year	Number of
1990	2937.24
1991	3056.82
1992	3181.56
1993	3293.79
1994	3450.75
1995	3584.15
1996	3750.99
1997	3883.32
1998	4053.94
1999	4191.98
2000	4272.91
2001	4310.93
2002	4348.17
2003	4333.64
2004	4251.07
2005	4198.1
2006	4175.32
2007	4106.7
2008	4120.54
2009	4159.11
2010	4172.22
2011	4041.98
2012	4048.59
2013	4029.02
2014	4067.67
2015	4104.37
2016	4133.88