Year	Number of
1990	1976.14
1991	2055.97
1992	2147.11
1993	2228.47
1994	2307.48
1995	2400.43
1996	2478.81
1997	2523.81
1998	2583.45
1999	2548.38
2000	2482.01
2001	2380.44
2002	2286.32
2003	2221.16
2004	2188.58
2005	2139.52
2006	2094.02
2007	2061.22
2008	2036.72
2009	2014.76
2010	2018.99
2011	2026.87
2012	2040.52
2013	2053.56
2014	2082.43
2015	2138.07
2016	2194.96