Year CPI 1916 10.4 1920 16.5 1924 17.3 1928 17.9 1932 12.9 1936 14.2 1940 13.9 1944 17.4 1948 23.7 1952 26.5 1956 26.8 1960 29.3 1964 30.9 1968 34.1 1972 41.1 1976 55.6 1980 77.8 1984 101.9 1988 115.7 1992 138.1 1996 154.4 2000 168.8