Quarter 1958=100: Seasonally Adjusted By Nber 1921-01-01 61.4000 1921-04-01 56.1000 1921-07-01 53.9000 1921-10-01 52.3000 1922-01-01 51.6000 1922-04-01 51.6000 1922-07-01 51.3000 1922-10-01 52.6000 1923-01-01 53.8000 1923-04-01 53.8000 1923-07-01 53.7000 1923-10-01 53.8000 1924-01-01 54.2000 1924-04-01 52.8000 1924-07-01 52.7000 1924-10-01 53.5000 1925-01-01 54.2000 1925-04-01 54.1000 1925-07-01 54.4000 1925-10-01 54.7000 1926-01-01 55.0000 1926-04-01 54.3000 1926-07-01 53.8000 1926-10-01 53.9000 1927-01-01 53.7000 1927-04-01 53.2000 1927-07-01 52.7000 1927-10-01 52.8000 1928-01-01 52.9000 1928-04-01 53.1000 1928-07-01 52.8000 1928-10-01 53.0000 1929-01-01 52.9000 1929-04-01 52.8000 1929-07-01 53.2000 1929-10-01 52.8000 1930-01-01 52.5000 1930-04-01 51.2000 1930-07-01 50.0000 1930-10-01 49.2000 1931-01-01 47.3000 1931-04-01 45.8000 1931-07-01 44.1000 1931-10-01 43.3000 1932-01-01 41.5000 1932-04-01 40.3000 1932-07-01 40.1000 1932-10-01 39.0000 1933-01-01 37.2000 1933-04-01 37.7000 1933-07-01 40.2000 1933-10-01 41.1000 1934-01-01 41.6000 1934-04-01 42.0000 1934-07-01 42.4000 1934-10-01 42.4000 1935-01-01 42.7000 1935-04-01 43.1000 1935-07-01 42.7000 1935-10-01 43.0000 1936-01-01 42.7000 1936-04-01 42.7000 1936-07-01 43.1000 1936-10-01 43.6000 1937-01-01 44.3000 1937-04-01 45.5000 1937-07-01 45.9000 1937-10-01 45.0000 1938-01-01 44.5000 1938-04-01 44.0000 1938-07-01 43.6000 1938-10-01 43.2000 1939-01-01 43.2000 1939-04-01 42.8000 1939-07-01 43.2000 1939-10-01 43.8000