Year	Number
1982	38021
1983	36209
1984	29952
1985	37147
1986	60077
1987	57780
1988	69569
1989	78239
1990	91827
1991	88809
1992	113893
1993	151458
1994	151134
1995	171665
1996	188818
1997	183237
1998	190033
1999	194078
2000	256957
2001	219021
2002	219670
2003	233849
2004	262709
2005	291577
2006	317361
2007	340750
2008	347913
2009	270386
2010	340007
2011	373950
2012	392997
2013	400168
2014	383786