1929	711100
1930	455500
1931	241000
1932	521900
1933	545600
1934	257600
1935	550500
1936	367100
1937	546100
1938	477800
1939	493500
1940	286400
1941	255000
1942	466800
1943	575300
1944	463700
1945	575800
1946	523700
1947	532700
1948	456000
1949	553800
1950	702300
1951	671800
1952	619100
1953	383400
1954	268300
1955	410600
1956	398900
1957	445300
1958	548500
1959	383700
1960	488700
1961	500500
1962	574100
1963	342300
1964	335400
1965	462300
1966	386900
1967	441200
1968	468300
1969	508500
1970	467500
1971	465000
1972	505600
1973	814400
1974	725700
1975	643300
1976	433700
1977	331400