Year	Number of
1990	906.09
1991	917.44
1992	930.07
1993	943.85
1994	959.1
1995	976.63
1996	971.39
1997	968.72
1998	967.42
1999	966.27
2000	965.45
2001	990.33
2002	1015.8
2003	1042.05
2004	1069.15
2005	1098.12
2006	1125.9
2007	1154.5
2008	1185.39
2009	1218.81
2010	1255.79
2011	1298.78
2012	1346.45
2013	1396.69
2014	1449.1
2015	1502.91
2016	1551.59