Year	Number of
1990	860.24
1991	882.61
1992	904.94
1993	912.24
1994	919.98
1995	943.85
1996	970.2
1997	1005.96
1998	1038.47
1999	1082.45
2000	1150.7
2001	1187.52
2002	1251.62
2003	1307.26
2004	1368.93
2005	1432.38
2006	1491.04
2007	1548.78
2008	1603.05
2009	1656.57
2010	1706.74
2011	1750.19
2012	1798.29
2013	1844.76
2014	1894.47
2015	1947.38
2016	2000.95