Year	Number of
1990	1366
1991	1395.68
1992	1441.66
1993	1516.65
1994	1580.33
1995	1664.96
1996	1738.18
1997	1785.86
1998	1846.03
1999	1914.55
2000	1950.62
2001	2021.11
2002	2064.12
2003	2110.02
2004	2149.98
2005	2205.5
2006	2254.76
2007	2293.63
2008	2335.02
2009	2361.53
2010	2396.85
2011	2399.92
2012	2426.85
2013	2432.93
2014	2414.79
2015	2450.61
2016	2480.94