***************************************************************************** *** Source: Alternative Fluorocarbons Environmental Acceptability Study *** *** Washington, D.C., U.S.A. *** ***************************************************************************** 1931 0.1 0.1 0.0 0.0 1932 0.1 0.1 0.0 0.0 1933 0.1 0.1 0.0 0.0 1934 0.2 0.2 0.0 0.0 1935 0.4 0.3 0.0 0.1 1936 0.5 0.5 0.0 0.0 1937 0.8 0.7 0.0 0.1 1938 1.2 1.1 0.0 0.1 1939 1.7 1.6 0.0 0.1 1940 2.3 2.2 0.0 0.1 1941 3.0 2.8 0.0 0.1 1942 3.7 3.5 0.0 0.2 1943 4.5 4.3 0.0 0.2 1944 6.1 5.7 0.0 0.4 1945 8.0 7.5 0.0 0.5 1946 13.9 8.9 0.0 5.1 1947 21.3 10.4 0.0 10.9 1948 24.8 11.5 0.0 13.2 1949 26.6 11.6 0.0 15.0 1950 29.5 11.6 0.0 18.0 1951 32.4 11.6 0.0 20.8 1952 33.7 12.0 0.0 21.6 1953 37.9 13.2 0.0 24.8 1954 42.9 14.7 0.0 28.1 1955 48.2 16.6 0.1 31.5 1956 56.1 18.9 0.0 37.2 1957 63.8 21.0 0.1 42.7 1958 66.9 23.6 0.1 43.2 1959 74.8 26.3 0.1 48.4 1960 89.1 28.8 0.2 60.0 1961 99.7 31.2 0.3 68.3 1962 114.5 33.4 0.5 80.7 1963 133.9 35.3 0.8 97.6 1964 155.5 37.6 1.8 116.3 1965 175.4 39.9 2.2 133.2 1966 195.0 42.8 2.5 149.7 1967 219.9 46.2 2.8 170.9 1968 246.5 50.4 3.1 193.1 1969 274.3 54.9 4.0 215.2 1970 299.9 60.0 4.9 235.1 1971 321.8 65.2 5.2 251.4 1972 349.9 70.7 6.3 272.9 1973 387.3 77.0 8.0 302.2 1974 418.6 83.6 9.3 325.8 1975 404.1 89.8 9.6 304.7 1976 390.4 97.0 8.0 285.3 1977 371.2 105.3 8.3 257.6 1978 341.3 113.9 14.1 213.4 1979 337.5 123.9 18.1 195.4 1980 332.5 134.4 21.0 177.1 1981 340.7 144.7 22.6 173.5 1982 337.4 151.6 22.0 163.6 1983 343.3 157.7 24.4 161.2 1984 359.4 162.0 28.5 169.0 1985 368.4 165.4 30.4 172.6 1986 376.5 170.3 34.2 172.0 1987 386.5 177.7 49.0 160.0 1988 392.8 186.9 59.6 146.2 1989 364.7 197.1 52.0 115.5 1990 310.5 202.9 33.8 73.9 1991 271.6 207.5 20.9 43.3 1992 255.3 205.9 16.2 33.2