Year	Total
1970	161220000
1971	173000000
1972	180330000
1973	192460000
1974	212250000
1975	235600000
1976	261410000
1977	281810000
1978	303140000
1979	331160000
1980	354460000
1981	378980000
1982	407810000
1983	436320000
1984	478430000