Year	Number of
1990	732.76
1991	726.44
1992	718.08
1993	741.23
1994	752.75
1995	741.57
1996	766.52
1997	780.1
1998	767.18
1999	763.09
2000	747.62
2001	792.58
2002	812.16
2003	832.57
2004	843.14
2005	858.42
2006	898.29
2007	917.43
2008	972.35
2009	989.27
2010	1019.35
2011	992.48
2012	1031.99
2013	995.35
2014	1015.27
2015	1020.63
2016	1024.76