═════════╤══════╤══════╤══════╤══════╤══════╤══════╤══════╤══════╤══════╤══════ │1906. │1907. │1908. │1909. │1910. │1911. │1912. │1913. │1914. │1915. ─────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼────── Jan. │$17.20│$17.50│$20.80│$21.40│$23.40│$21.90│$26.90│$20.30│$25.00│$24.60 Feb. │ 17.30│ 18.40│ 21.10│ 22.10│ 24.00│ 22.00│ 27.00│ 20.10│ 24.60│ 23.50 Mar. │ 17.60│ 18.75│ 22.70│ 23.60│ 22.80│ 21.60│ 26.70│ 19.00│ 24.20│ 22.70 Apr. │ 18.50│ 18.20│ 23.10│ 25.60│ 21.70│ 22.50│ 27.70│ 19.00│ 25.00│ 25.60 May │ 17.80│ 19.20│ 23.10│ 27.00│ 21.40│ 22.70│ 26.70│ 19.30│ 23.50│ 22.00 June │ 16.70│ 20.10│ 21.20│ 24.60│ 19.20│ 21.10│ 23.70│ 19.40│ 22.70│ 22.90 July │ 16.00│ 18.70│ 20.70│ 20.90│ 19.20│ 22.00│ 23.20│ 20.00│ 22.50│ 24.10 Aug. │ 16.10│ 20.40│ 20.70│ 19.60│ 20.50│ 24.30│ 23.40│ 23.50│ 24.00│ 24.00 Sep. │ 16.70│ 23.20│ 21.30│ 20.00│ 20.60│ 24.40│ 23.00│ 26.10│ 23.00│ 21.80 Oct. │ 18.05│ 23.70│ 21.40│ 21.80│ 20.50│ 25.80│ 22.50│ 23.80│ 20.70│ 21.30 Nov. │ 18.90│ 20.80│ 21.30│ 20.80│ 20.90│ 25.80│ 20.00│ 24.10│ 22.40│ 20.90 Dec. │ 18.40│ 20.20│ 21.30│ 21.30│ 21.20│ 26.20│ 19.00│ 24.10│ 23.70│ 20.60 ─────────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴────── ═════════╤══════╤══════╤══════╤══════╤══════╤══════╤══════╤══════╤══════╤══════ │1916. │1917. │1918. │1919. │1920. │1921. │1922. │1923. │1924. │1925. ─────────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼──────┼────── Jan. │$19.70│$31.60│$41.00│$54.00│ │ │ │ │ │ Feb. │ 21.20│ 35.50│ 41.00│ 44.00│ │ │ │ │ │ Mar. │ 20.80│ 39.30│ 39.20│ 41.50│ │ │ │ │ │ Apr. │ 21.40│ 41.50│ 38.20│ 46.50│ │ │ │ │ │ May │ 21.80│ 40.50│ 38.00│ 45.00│ │ │ │ │ │ June │ 21.20│ 39.50│ 38.00│ 46.50│ │ │ │ │ │ July │ 21.30│ 44.70│ 30.72│ 52.00│ │ │ │ │ │ Aug. │ 24.60│ 45.00│ 29.97│ 54.00│ │ │ │ │ │ Sep. │ 26.90│ 42.50│ 30.50│ 52.00│ │ │ │ │ │ Oct. │ 27.70│ 41.50│ 29.65│ 48.50│ │ │ │ │ │ Nov. │ 32.91│ 44.25│ 29.31│ 45.50│ │ │ │ │ │ Dec. │ 31.30│ 44.50│ 41.16│ 45.50│ │ │ │ │ │ ─────────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────┴──────