Quarter Third Quarter, July 1914=100 (=$10.92) 1914-07-01 100.000 1914-10-01 100.000 1915-01-01 102.000 1915-04-01 102.000 1915-07-01 102.000 1915-10-01 103.000 1916-01-01 105.000 1916-04-01 108.000 1916-07-01 115.000 1916-10-01 119.000 1917-01-01 120.000 1917-04-01 121.000 1917-07-01 123.000 1917-10-01 134.000 1918-01-01 143.000 1918-04-01 149.000 1918-07-01 164.000 1918-10-01 186.000 1919-01-01 181.000 1919-04-01 184.000 1919-07-01 183.000 1919-10-01 200.000 1920-01-01 205.000 1920-04-01 212.000 1920-07-01 234.000 1920-10-01 234.000 1921-01-01 230.000 1921-04-01 223.000 1921-07-01 189.000 1921-10-01 187.000 1922-01-01 165.000 1922-04-01 163.000 1922-07-01 166.000 1922-10-01 181.000 1923-01-01 189.000 1923-04-01 199.000 1923-07-01 218.000 1923-10-01 216.000 1924-01-01 214.000 1924-04-01 214.000 1924-07-01 215.000 1924-10-01 213.000 1925-01-01 211.000 1925-04-01 211.000 1925-07-01 213.000 1925-10-01 213.000 1926-01-01 215.000 1926-04-01 218.000 1926-07-01 220.000 1926-10-01 220.000 1927-01-01 220.000 1927-04-01 219.000 1927-07-01 218.000 1927-10-01 219.000 1928-01-01 220.000 1928-04-01 220.000 1928-07-01 220.000 1928-10-01 221.000 1929-01-01 222.000 1929-04-01 222.000 1929-07-01 222.000 1929-10-01 224.000 1930-01-01 225.000 1930-04-01 225.000 1930-07-01 225.000 1930-10-01 220.000 1931-01-01 216.000 1931-04-01 216.000 1931-07-01 216.000