Year	Total
1971	103900
1972	108700
1973	92950
1974	156400
1975	156000
1976	124300
1977	169100
1978	157400
1979	197200
1980	206300
1981	177200
1982	143600
1983	142300
1984	111600
1985	143700
1986	161300
1987	212000
1988	180500
1989	141300
1990	99830
1991	93640
1992	120600
1993	117700
1994	125500
1995	172100
1996	169300
1997	146100
1998	120000
1999	144500
2000	151200
2001	176600
2002	214300
2003	118900
2004	173600
2005	204600
2006	219300
2007	179600
2008	174000
2009	208900
2010	239800
2011	183800