Quarterly Per Cent
1920-01-01 96.0000
1920-04-01 96.2000
1920-07-01 91.3000
1920-10-01 69.6000
1921-01-01 70.7000
1921-04-01 58.5000
1921-07-01 63.4000
1921-10-01 65.9000
1922-01-01 74.6000
1922-04-01 81.5000
1922-07-01 90.8000
1922-10-01 93.9000
1923-01-01 95.7000
1923-04-01 96.9000
1923-07-01 87.2000
1923-10-01 86.2000
1924-01-01 90.4000
1924-04-01 84.3000
1924-07-01 85.3000
1924-10-01 87.9000
1925-01-01 95.3000
1925-04-01 93.4000
1925-07-01 94.1000
1925-10-01 92.8000
1926-01-01 93.6000
1926-04-01 93.7000
1926-07-01 94.4000
1926-10-01 92.8000
1927-01-01 92.1000
1927-04-01 86.9000
1927-07-01 90.1000
1927-10-01 84.8000
1928-01-01 88.3000
1928-04-01 91.1000
1928-07-01 90.6000
1928-10-01 93.4000
1929-01-01 92.1000
1929-04-01 94.1000
1929-07-01 94.3000
1929-10-01 89.8000
1930-01-01 84.1000
1930-04-01 83.0000
1930-07-01 71.6000
1930-10-01 65.2000
1931-01-01 67.2000
1931-04-01 63.1000
1931-07-01 59.3000
1931-10-01 50.9000
1932-01-01 45.7000
1932-04-01 40.2000
1932-07-01 39.5000
1932-10-01 41.8000
1933-01-01 38.6000
1933-04-01 52.3000
1933-07-01 70.0000
1933-10-01 64.6000
1934-01-01 69.7000
1934-04-01 72.2000
1934-07-01 64.4000
1934-10-01 65.6000
1935-01-01 74.7000
1935-04-01 76.2000
1935-07-01 78.9000
1935-10-01 87.9000
1936-01-01 84.8000
1936-04-01 88.3000
1936-07-01 89.4000
1936-10-01 89.0000
1937-01-01 90.3000
1937-04-01 89.5000
1937-07-01 85.7000
1937-10-01 75.1000
1938-01-01 61.5000
1938-04-01 56.0000
1938-07-01 68.1000
1938-10-01 77.8000
1946-01-01 82.3000
1946-04-01 93.6000
1946-07-01 95.5000
1946-10-01 95.6000
1947-01-01 95.9000
1947-04-01 96.0000
1947-07-01 96.3000
1947-10-01 97.4000
1948-01-01 97.4000
1948-04-01 97.8000
1948-07-01 97.8000
1948-10-01 94.2000
1949-01-01 92.2000
1949-04-01 89.3000
1949-07-01 89.6000
1949-10-01 92.6000
1950-01-01 94.9000
1950-04-01 96.4000
1950-07-01 98.2000
1950-10-01 98.2000
1951-01-01 97.3000
1951-04-01 97.1000
1951-07-01 96.7000
1951-10-01 95.9000
1952-01-01 96.1000
1952-04-01 95.2000
1952-07-01 96.4000
1952-10-01 97.2000
1953-01-01 96.2000
1953-04-01 97.1000
1953-07-01 96.1000
1953-10-01 95.3000
1954-01-01 92.8000
1954-04-01 95.6000
1954-07-01 93.8000
1954-10-01 93.0000
1955-01-01 95.1000
1955-04-01 95.7000
1955-07-01 95.6000
1955-10-01 95.2000
1956-01-01 96.5000
1956-04-01 96.1000
1956-07-01 97.2000
1956-10-01 96.9000
1957-01-01 97.7000
1957-04-01 97.4000
1957-07-01 95.9000
1957-10-01 91.9000
1958-01-01 92.1000
1958-04-01 91.6000
1958-07-01 93.9000
1958-10-01 94.6000
1959-01-01 96.8000
1959-04-01 98.0000
1959-07-01 94.2000
1959-10-01 95.8000
1960-01-01 96.2000
1960-04-01 95.9000
1960-07-01 93.2000
1960-10-01 91.9000
1961-01-01 89.8000
1961-04-01 97.3000
1961-07-01 95.0000
1961-10-01 95.4000
1962-01-01 95.0000
1962-04-01 96.8000
1962-07-01 95.1000
1962-10-01 95.2000
1963-01-01 92.9000
1963-04-01 97.3000