Year	Number of
1990	365.53
1991	384.01
1992	402.22
1993	422.16
1994	443.28
1995	464.99
1996	484.78
1997	503.61
1998	528.21
1999	551.31
2000	577.55
2001	595.09
2002	615.5
2003	638.02
2004	658.82
2005	669.17
2006	682.23
2007	701.02
2008	715.97
2009	737.29
2010	765.57
2011	796.02
2012	830.1
2013	855.42
2014	892.31
2015	934.41
2016	987.08