Year	Number of
1990	842.02
1991	892.71
1992	946.54
1993	1004.66
1994	1067.68
1995	1136.38
1996	1192.58
1997	1253.39
1998	1320.81
1999	1392.07
2000	1467.33
2001	1523.85
2002	1583.13
2003	1648.95
2004	1720.08
2005	1797.52
2006	1900.21
2007	2011.08
2008	2133.07
2009	2263.89
2010	2403.95
2011	2520.71
2012	2644.1
2013	2774.31
2014	2913.48
2015	3062.57
2016	3220.77