Month Percent 1914-11-01 104.700 1914-12-01 101.600 1915-01-01 93.8000 1915-02-01 98.1000 1915-03-01 92.4000 1915-04-01 89.6000 1915-05-01 94.0000 1915-06-01 96.6000 1915-07-01 94.1000 1915-08-01 90.1000 1915-09-01 89.3000 1915-10-01 87.9000 1915-11-01 88.3000 1915-12-01 88.4000 1916-01-01 82.1000 1916-02-01 80.3000 1916-03-01 77.5000 1916-04-01 73.2000 1916-05-01 70.0000 1916-06-01 73.4000 1916-07-01 71.2000 1916-08-01 70.6000 1916-09-01 71.8000 1916-10-01 73.1000 1916-11-01 74.7000 1916-12-01 70.8000 1917-01-01 74.4000 1917-02-01 74.7000 1917-03-01 78.7000 1917-04-01 74.0000 1917-05-01 70.2000 1917-06-01 68.5000 1917-07-01 79.7000 1917-08-01 82.2000 1917-09-01 79.0000 1917-10-01 74.0000 1917-11-01 66.3000 1917-12-01 63.7000 1918-01-01 65.0000 1918-02-01 66.1000 1918-03-01 64.2000 1918-04-01 62.3000 1918-05-01 62.0000 1918-06-01 62.1000 1918-07-01 59.8000 1918-08-01 57.6000 1918-09-01 53.2000 1918-10-01 50.7000 1918-11-01 50.1000 1918-12-01 50.2000 1919-01-01 52.3000 1919-02-01 52.2000 1919-03-01 51.6000 1919-04-01 51.9000 1919-05-01 51.8000 1919-06-01 52.8000 1919-07-01 50.4000 1919-08-01 50.6000 1919-09-01 51.1000 1919-10-01 48.8000 1919-11-01 46.6000 1919-12-01 46.0000 1920-01-01 44.7000 1920-02-01 43.1000 1920-03-01 42.8000 1920-04-01 43.0000 1920-05-01 42.6000 1920-06-01 43.4000 1920-07-01 43.7000 1920-08-01 43.7000 1920-09-01 43.2000 1920-10-01 43.2000 1920-11-01 43.8000 1920-12-01 44.9000 1921-01-01 47.6000 1921-02-01 49.6000 1921-03-01 50.2000 1921-04-01 53.8000 1921-05-01 56.4000 1921-06-01 59.1000 1921-07-01 61.7000 1921-08-01 65.2000 1921-09-01 67.4000 1921-10-01 69.4000 1921-11-01 71.7000 1921-12-01 71.8000 1922-01-01 74.7000 1922-02-01 76.9000 1922-03-01 77.6000 1922-04-01 77.6000 1922-05-01 77.6000 1922-06-01 77.8000 1922-07-01 78.2000 1922-08-01 79.7000 1922-09-01 78.0000 1922-10-01 76.7000 1922-11-01 76.1000 1922-12-01 73.5000 1923-01-01 75.0000 1923-02-01 76.1000 1923-03-01 75.7000 1923-04-01 76.0000 1923-05-01 75.9000 1923-06-01 76.7000 1923-07-01 76.4000 1923-08-01 77.6000 1923-09-01 76.4000 1923-10-01 76.1000 1923-11-01 76.3000 1923-12-01 75.0000 1924-01-01 79.2000 1924-02-01 81.2000 1924-03-01 80.5000 1924-04-01 80.5000 1924-05-01 82.7000 1924-06-01 82.5000 1924-07-01 82.6000 1924-08-01 82.4000 1924-09-01 80.1000 1924-10-01 78.5000 1924-11-01 77.1000 1924-12-01 73.8000 1925-01-01 76.2000 1925-02-01 77.0000 1925-03-01 76.4000 1925-04-01 76.6000 1925-05-01 76.8000 1925-06-01 76.3000 1925-07-01 76.1000 1925-08-01 75.5000 1925-09-01 73.8000 1925-10-01 72.0000 1925-11-01 71.6000 1925-12-01 68.5000 1926-01-01 72.5000 1926-02-01 74.1000 1926-03-01 74.3000 1926-04-01 74.7000 1926-05-01 74.9000 1926-06-01 75.4000 1926-07-01 74.7000 1926-08-01 75.0000 1926-09-01 73.6000 1926-10-01 72.8000 1926-11-01 73.0000 1926-12-01 70.6000 1927-01-01 75.6000 1927-02-01 79.0000 1927-03-01 79.1000 1927-04-01 78.7000 1927-05-01 78.7000 1927-06-01 77.8000 1927-07-01 77.9000 1927-08-01 78.4000 1927-09-01 76.5000 1927-10-01 75.1000 1927-11-01 72.4000 1927-12-01 68.4000 1928-01-01 71.2000 1928-02-01 74.0000 1928-03-01 73.5000 1928-04-01 71.2000 1928-05-01 69.5000 1928-06-01 68.0000 1928-07-01 68.0000 1928-08-01 69.0000 1928-09-01 67.6000 1928-10-01 67.1000 1928-11-01 66.7000 1928-12-01 63.6000 1929-01-01 66.8000 1929-02-01 69.4000 1929-03-01 70.3000 1929-04-01 72.7000 1929-05-01 74.4000 1929-06-01 74.5000 1929-07-01 73.8000 1929-08-01 74.2000 1929-09-01 73.5000 1929-10-01 73.3000 1929-11-01 70.2000 1929-12-01 69.3000 1930-01-01 74.4000 1930-02-01 78.3000 1930-03-01 80.3000 1930-04-01 81.0000 1930-05-01 82.6000 1930-06-01 82.4000 1930-07-01 82.0000 1930-08-01 81.7000 1930-09-01 81.4000 1930-10-01 81.5000 1930-11-01 81.3000 1930-12-01 76.2000 1931-01-01 79.0000 1931-02-01 83.4000 1931-03-01 84.0000 1931-04-01 83.5000 1931-05-01 84.4000 1931-06-01 84.3000 1931-07-01 84.3000 1931-08-01 81.4000 1931-09-01 77.5000 1931-10-01 62.6000 1931-11-01 63.1000 1931-12-01 65.2000 1932-01-01 66.5000 1932-02-01 67.4000 1932-03-01 69.7000 1932-04-01 69.3000 1932-05-01 64.8000 1932-06-01 58.4000 1932-07-01 56.3000 1932-08-01 58.2000 1932-09-01 60.0000 1932-10-01 61.5000 1932-11-01 62.4000 1932-12-01 62.5000 1933-01-01 64.3000 1933-02-01 63.1000 1933-03-01 51.3000 1933-04-01 61.0000 1933-05-01 66.7000 1933-06-01 68.3000 1933-07-01 68.3000 1933-08-01 68.1000 1933-09-01 66.7000 1933-10-01 65.6000 1933-11-01 64.9000 1933-12-01 63.9000 1934-01-01 63.5000 1934-02-01 64.4000 1934-03-01 67.9000 1934-04-01 68.3000 1934-05-01 68.8000 1934-06-01 69.5000 1934-07-01 69.6000 1934-08-01 70.0000 1934-09-01 70.0000 1934-10-01 70.1000 1934-11-01 70.3000 1934-12-01 70.6000 1935-01-01 71.3000 1935-02-01 72.1000 1935-03-01 72.3000 1935-04-01 72.6000 1935-05-01 73.0000 1935-06-01 73.8000 1935-07-01 74.4000 1935-08-01 74.8000 1935-09-01 75.1000 1935-10-01 75.9000 1935-11-01 76.7000 1935-12-01 77.5000 1936-01-01 77.9000 1936-02-01 78.0000 1936-03-01 78.2000 1936-04-01 78.2000 1936-05-01 78.3000 1936-06-01 78.8000 1936-07-01 79.0000 1936-08-01 79.2000 1936-09-01 79.4000 1936-10-01 79.8000 1936-11-01 80.1000 1936-12-01 80.1000 1937-01-01 80.2000 1937-02-01 80.3000 1937-03-01 80.3000 1937-04-01 80.0000 1937-05-01 79.6000 1937-06-01 79.6000 1937-07-01 79.6000 1937-08-01 79.6000 1937-09-01 79.9000 1937-10-01 80.1000 1937-11-01 80.0000 1937-12-01 79.8000 1938-01-01 80.1000 1938-02-01 80.3000 1938-03-01 80.4000 1938-04-01 81.6000 1938-05-01 82.5000 1938-06-01 82.5000 1938-07-01 82.4000 1938-08-01 82.4000 1938-09-01 82.3000 1938-10-01 83.0000 1938-11-01 83.3000 1938-12-01 83.5000 1939-01-01 83.8000 1939-02-01 84.1000 1939-03-01 84.4000 1939-04-01 84.8000 1939-05-01 85.3000 1939-06-01 85.4000 1939-07-01 85.7000 1939-08-01 86.6000 1939-09-01 85.3000 1939-10-01 85.2000 1939-11-01 85.9000 1939-12-01 86.6000 1940-01-01 87.2000 1940-02-01 87.4000 1940-03-01 87.6000 1940-04-01 87.9000 1940-05-01 88.2000 1940-06-01 88.5000 1940-07-01 89.0000 1940-08-01 89.2000 1940-09-01 89.4000 1940-10-01 89.8000 1940-11-01 90.4000 1940-12-01 90.7000 1941-01-01 90.9000 1941-02-01 91.0000 1941-03-01 91.1000 1941-04-01 91.1000 1941-05-01 91.1000 1941-06-01 91.1000 1941-07-01 91.0000 1941-08-01 91.0000 1941-09-01 90.9000 1941-10-01 90.9000 1941-11-01 91.0000 1941-12-01 90.6000 1942-01-01 90.6000 1942-02-01 90.7000 1942-03-01 90.7000 1942-04-01 90.6000 1942-05-01 89.9000 1942-06-01 89.3000 1942-07-01 87.8000 1942-08-01 86.3000 1942-09-01 85.7000 1942-10-01 83.7000 1942-11-01 81.2000 1942-12-01 78.2000 1943-01-01 77.4000 1943-02-01 78.0000 1943-03-01 76.9000 1943-04-01 76.1000 1943-05-01 76.3000 1943-06-01 75.2000 1943-07-01 72.2000 1943-08-01 70.4000 1943-09-01 68.3000 1943-10-01 68.6000 1943-11-01 66.8000 1943-12-01 63.4000 1944-01-01 62.4000 1944-02-01 63.1000 1944-03-01 61.6000 1944-04-01 60.2000 1944-05-01 58.2000 1944-06-01 56.0000 1944-07-01 56.3000 1944-08-01 55.2000 1944-09-01 53.3000 1944-10-01 52.0000 1944-11-01 50.1000 1944-12-01 49.2000 1945-01-01 49.5000 1945-02-01 48.8000 1945-03-01 48.2000 1945-04-01 47.3000 1945-05-01 46.2000 1945-06-01 45.1000 1945-07-01 45.0000 1945-08-01 44.1000 1945-09-01 43.2000 1945-10-01 43.0000 1945-11-01 42.4000 1945-12-01 42.1000 1946-01-01 42.5000 1946-02-01 43.0000 1946-03-01 43.5000 1946-04-01 44.1000 1946-05-01 43.8000 1946-06-01 43.3000 1946-07-01 43.0000 1946-08-01 42.9000 1946-09-01 42.8000 1946-10-01 43.1000 1946-11-01 42.9000 1946-12-01 42.8000 1947-01-01 43.1000 1947-02-01 43.3000 1947-03-01 44.9000 1947-04-01 46.3000 1947-05-01 47.1000 1947-06-01 47.5000 1947-07-01 47.7000 1947-08-01 47.8000 1947-09-01 48.0000 1947-10-01 48.1000 1947-11-01 48.4000 1947-12-01 48.7000 1948-01-01 49.1000 1948-02-01 50.2000 1948-03-01 50.6000 1948-04-01 51.1000 1948-05-01 51.3000 1948-06-01 51.0000 1948-07-01 50.6000 1948-08-01 50.6000 1948-09-01 50.4000 1948-10-01 48.8000 1948-11-01 49.1000 1948-12-01 49.1000