Year	Number of
1990	1122.27
1991	1207.82
1992	1298.8
1993	1394.32
1994	1496.39
1995	1608.24
1996	1664.87
1997	1726.12
1998	1791.42
1999	1858.02
2000	1926.88
2001	1950.98
2002	1974.51
2003	2001.33
2004	2030.77
2005	2063.12
2006	2080.26
2007	2097.45
2008	2116.9
2009	2137.04
2010	2160.53
2011	2174.16
2012	2190.82
2013	2208.17
2014	2229.52
2015	2250.5
2016	2271.77