Year	Number of
1990	534.01
1991	548.5
1992	563.9
1993	578.67
1994	596.26
1995	616.73
1996	637.44
1997	660.6
1998	689.99
1999	722.61
2000	758.85
2001	782.03
2002	801.73
2003	818.34
2004	860.44
2005	890.69
2006	937.04
2007	976.86
2008	1014.85
2009	1052.62
2010	1094.49
2011	1142.84
2012	1187.6
2013	1233.36
2014	1280.64
2015	1329.65
2016	1376.25