Year	Number of
1990	441.43
1991	470.88
1992	510.7
1993	562.15
1994	618.79
1995	667.8
1996	702.17
1997	730.06
1998	755.23
1999	791.42
2000	834.62
2001	880.07
2002	915.04
2003	952.74
2004	992.06
2005	1024.1
2006	1051.37
2007	1069.13
2008	1090.01
2009	1102.69
2010	1119.81
2011	1135.59
2012	1155.06
2013	1182.21
2014	1210.45
2015	1240.85
2016	1278.07