Year	Number of
1990	1348.25
1991	1395.93
1992	1447.53
1993	1502.23
1994	1559.44
1995	1620.29
1996	1672.01
1997	1727.58
1998	1784.89
1999	1843.29
2000	1902.93
2001	1950.25
2002	1998.89
2003	2048.98
2004	2101.27
2005	2155.08
2006	2193.2
2007	2231.88
2008	2272.41
2009	2315.47
2010	2360.17
2011	2400.23
2012	2442.29
2013	2486.05
2014	2532.79
2015	2582.96
2016	2634.89