Month	Per Cent Base Scale
1917-01-01	119.500
1917-02-01	119.500
1917-03-01	137.500
1917-04-01	137.500
1917-05-01	152.500
1917-06-01	152.500
1917-07-01	169.000
1917-08-01	169.000
1917-09-01	185.500
1917-10-01	185.500
1917-11-01	196.000
1917-12-01	196.000
1918-01-01	200.500
1918-02-01	200.500
1918-03-01	196.000
1918-04-01	196.000
1918-05-01	188.500
1918-06-01	188.500
1918-07-01	190.000
1918-08-01	190.000
1918-09-01	190.000
1918-10-01	190.000
1918-11-01	185.500
1918-12-01	185.500
1919-01-01	193.000
1919-02-01	193.000
1919-03-01	182.500
1919-04-01	182.500
1919-05-01	170.500
1919-06-01	170.500
1919-07-01	166.000
1919-08-01	166.000
1919-09-01	166.000
1919-10-01	166.000
1919-11-01	166.000
1919-12-01	166.000
1920-01-01	166.000
1920-02-01	166.000
1920-03-01	175.000
1920-04-01	175.000
1920-05-01	187.000
1920-06-01	187.000
1920-07-01	208.000
1920-08-01	208.000
1920-09-01	206.500
1920-10-01	206.500
1920-11-01	209.500
1920-12-01	209.500
1921-01-01	190.000
1921-02-01	190.000
1921-03-01	164.500
1921-04-01	164.500
1921-05-01	154.000
1921-06-01	154.000
1921-07-01	151.000
1921-08-01	151.000
1921-09-01	128.500
1921-10-01	128.500
1921-11-01	118.000
1921-12-01	118.000
1922-01-01	119.500
1922-02-01	119.500
1922-03-01	119.500
1922-04-01	119.500
1922-05-01	119.500
1922-06-01	119.500
1922-07-01	122.500
1922-08-01	122.500
1922-09-01	127.000
1922-10-01	127.000
1922-11-01	131.500
1922-12-01	131.500
1923-01-01	134.500
1923-02-01	134.500
1923-03-01	134.500
1923-04-01	134.500
1923-05-01	134.500
1923-06-01	134.500
1923-07-01	137.500
1923-08-01	137.500
1923-09-01	143.500
1923-10-01	143.500
1923-11-01	146.500
1923-12-01	146.500
1924-01-01	148.000
1924-02-01	148.000
1924-03-01	148.000
1924-04-01	148.000
1924-05-01	148.000
1924-06-01	148.000
1924-07-01	146.500
1924-08-01	146.500
1924-09-01	143.500
1924-10-01	143.500
1924-11-01	140.500
1924-12-01	140.500
1925-01-01	139.000
1925-02-01	139.000
1925-03-01	137.500
1925-04-01	137.500
1925-05-01	133.000
1925-06-01	133.000
1925-07-01	127.000
1925-08-01	127.000
1925-09-01	127.000
1925-10-01	127.000
1925-11-01	127.000
1925-12-01	127.000
1926-01-01	128.500
1926-02-01	128.500
1926-03-01	131.500
1926-04-01	131.500
1926-05-01	133.000
1926-06-01	133.000
1926-07-01	133.000
1926-08-01	133.000
1926-09-01	133.000
1926-10-01	133.000
1926-11-01	133.000
1926-12-01	133.000
1927-01-01	133.000
1927-02-01	133.000
1927-03-01	128.500
1927-04-01	128.500
1927-05-01	125.500
1927-06-01	125.500
1927-07-01	125.500
1927-08-01	125.500
1927-09-01	125.500
1927-10-01	125.500
1927-11-01	128.500
1927-12-01	128.500
1928-01-01	125.500
1928-02-01	125.500
1928-03-01	125.500
1928-04-01	125.500
1928-05-01	125.500
1928-06-01	125.500
1928-07-01	125.500
1928-08-01	125.500
1928-09-01	125.500
1928-10-01	125.500
1928-11-01	125.500
1928-12-01	125.500
1929-01-01	125.500
1929-02-01	125.500
1929-03-01	125.500
1929-04-01	125.500
1929-05-01	127.000
1929-06-01	127.000
1929-07-01	127.000
1929-08-01	127.000
1929-09-01	127.000
1929-10-01	127.000
1929-11-01	127.000
1929-12-01	127.000
1930-01-01	127.000
1930-02-01	127.000
1930-03-01	122.500
1930-04-01	122.500
1930-05-01	122.500
1930-06-01	122.500
1930-07-01	118.000
1930-08-01	118.000
1930-09-01	118.000
1930-10-01	118.000
1930-11-01	116.500
1930-12-01	116.500
1931-01-01	113.500
1931-02-01	113.500
1931-03-01	115.000
1931-04-01	115.000
1931-05-01	110.500
1931-06-01	110.500
1931-07-01	107.500
1931-08-01	107.500
1931-09-01	107.500
1931-10-01	107.500
1931-11-01	107.500
1931-12-01	107.500
1932-01-01	107.500
1932-02-01	107.500
1932-03-01	104.500
1932-04-01	104.500
1932-05-01	104.500
1932-06-01	94.0000
1932-07-01	94.0000
1932-08-01	94.0000
1932-09-01	94.0000
1932-10-01	94.0000
1932-11-01	94.0000
1932-12-01	94.0000
1933-01-01	94.0000
1933-02-01	94.0000
1933-03-01	94.0000
1933-04-01	94.0000
1933-05-01	94.0000
1933-06-01	94.0000
1933-07-01	101.500
1933-08-01	101.500
1933-09-01	101.500
1933-10-01	101.500
1933-11-01	101.500
1933-12-01	101.500
1934-01-01	101.500
1934-02-01	101.500
1934-03-01	101.500
1934-04-01	101.500
1934-05-01	101.500
1934-06-01	115.000
1934-07-01	115.000
1934-08-01	115.000
1934-09-01	115.000
1934-10-01	115.000
1934-11-01	115.000
1934-12-01	115.000
1935-01-01	115.000
1935-02-01	115.000
1935-03-01	115.000
1935-04-01	115.000
1935-05-01	115.000
1935-06-01	115.000
1935-07-01	115.000
1935-08-01	115.000
1935-09-01	115.000
1935-10-01	115.000
1935-11-01	115.000
1935-12-01	115.000
1936-01-01	115.000
1936-02-01	115.000
1936-03-01	115.000
1936-04-01	115.000
1936-05-01	115.000
1936-06-01	115.000
1936-07-01	117.000
1936-08-01	117.000
1936-09-01	117.000
1936-10-01	117.000
1936-11-01	125.000
1936-12-01	125.000
1937-01-01	125.000
1937-02-01	125.000
1937-03-01	125.000
1937-04-01	125.000
1937-05-01	125.000
1937-06-01	125.000
1937-07-01	125.000
1937-08-01	125.000
1937-09-01	125.000
1937-10-01	125.000
1937-11-01	125.000
1937-12-01	125.000
1938-01-01	125.000
1938-02-01	125.000
1938-03-01	125.000
1938-04-01	125.000