Year	Number of
1990	852.67
1991	853.37
1992	856.29
1993	860.19
1994	860.25
1995	871.79
1996	870.72
1997	887.57
1998	899.46
1999	906.21
2000	906.33
2001	903.86
2002	908.68
2003	914.56
2004	919.5
2005	927.45
2006	934.26
2007	943.95
2008	961.46
2009	980.54
2010	1002.18
2011	1020.05
2012	1038.45
2013	1057.81
2014	1079.63
2015	1102.98
2016	1125.31