Year	Number of
1990	1363.54
1991	1387.63
1992	1413.23
1993	1438.85
1994	1464.22
1995	1493.4
1996	1525.72
1997	1559.63
1998	1595.22
1999	1631.76
2000	1669.49
2001	1686.66
2002	1704.83
2003	1726.26
2004	1753.42
2005	1785
2006	1822.96
2007	1862.08
2008	1903.72
2009	1949.28
2010	2000.11
2011	2044.76
2012	2091.78
2013	2141.47
2014	2196.06
2015	2248.15
2016	2300.5