Year	Number of
1990	781.09
1991	812.44
1992	865.79
1993	895.83
1994	933.54
1995	975.43
1996	1014.38
1997	1056.39
1998	1105.42
1999	1168.77
2000	1187.29
2001	1209.93
2002	1231.53
2003	1274.11
2004	1318.59
2005	1344.24
2006	1358.58
2007	1382.7
2008	1421.77
2009	1458.83
2010	1482.94
2011	1523.07
2012	1562.59
2013	1570.73
2014	1609.38
2015	1628.82
2016	1652.72