Month	Per Cent
1920-02-01	73.9000
1920-03-01	74.3000
1920-04-01	73.5000
1920-05-01	75.8000
1920-06-01	76.5000
1920-07-01	76.1000
1920-08-01	76.9000
1920-09-01	77.0000
1920-10-01	77.3000
1920-11-01	76.2000
1920-12-01	75.6000
1921-01-01	74.8000
1921-02-01	74.8000
1921-03-01	76.2000
1921-04-01	76.1000
1921-05-01	76.0000
1921-06-01	76.4000
1921-07-01	76.0000
1921-08-01	76.2000
1921-09-01	76.5000
1921-10-01	76.8000
1921-11-01	76.2000
1921-12-01	76.1000
1922-01-01	76.0000
1922-02-01	75.9000
1922-03-01	76.2000
1922-04-01	76.3000
1922-05-01	76.9000
1922-06-01	78.1000
1922-07-01	74.8000
1922-08-01	70.9000
1922-09-01	70.1000
1922-10-01	72.0000
1922-11-01	73.1000
1922-12-01	73.7000
1923-01-01	73.9000
1923-02-01	75.0000
1923-03-01	75.4000
1923-04-01	76.2000
1923-05-01	77.1000
1923-06-01	78.0000
1923-07-01	78.5000
1923-08-01	80.2000
1923-09-01	81.4000
1923-10-01	82.1000
1923-11-01	81.6000
1923-12-01	81.2000
1924-01-01	81.0000
1924-02-01	81.0000
1924-03-01	80.7000
1924-04-01	80.9000
1924-05-01	81.2000
1924-06-01	81.2000
1924-07-01	81.2000
1924-08-01	81.4000
1924-09-01	81.7000
1924-10-01	81.9000
1924-11-01	81.5000
1924-12-01	81.1000
1925-01-01	80.9000
1925-02-01	81.2000
1925-03-01	81.0000
1925-04-01	81.6000
1925-05-01	81.9000
1925-06-01	82.2000
1925-07-01	82.5000
1925-08-01	82.9000
1925-09-01	83.2000
1925-10-01	83.2000
1925-11-01	83.0000
1925-12-01	82.9000
1926-01-01	82.8000
1926-02-01	82.8000
1926-03-01	82.6000
1926-04-01	82.8000
1926-05-01	83.1000
1926-06-01	83.4000
1926-07-01	83.9000
1926-08-01	84.2000
1926-09-01	84.6000
1926-10-01	84.8000
1926-11-01	84.0000
1926-12-01	84.0000
1927-01-01	83.4000
1927-02-01	83.2000
1927-03-01	83.1000
1927-04-01	83.1000
1927-05-01	83.5000
1927-06-01	83.6000
1927-07-01	84.0000
1927-08-01	84.3000
1927-09-01	85.1000
1927-10-01	85.1000
1927-11-01	84.2000
1927-12-01	84.3000
1928-01-01	84.2000
1928-02-01	83.5000
1928-03-01	83.6000
1928-04-01	83.4000
1928-05-01	83.6000
1928-06-01	83.7000
1928-07-01	83.7000
1928-08-01	83.8000
1928-09-01	84.1000
1928-10-01	84.2000
1928-11-01	83.4000
1928-12-01	83.3000
1929-01-01	83.0000
1929-02-01	83.1000
1929-03-01	82.9000
1929-04-01	83.2000
1929-05-01	83.6000
1929-06-01	83.7000
1929-07-01	83.8000
1929-08-01	84.0000
1929-09-01	84.3000
1929-10-01	84.5000
1929-11-01	83.7000
1929-12-01	83.4000
1930-01-01	83.0000
1930-02-01	82.5000
1930-03-01	82.5000
1930-04-01	82.8000
1930-05-01	83.0000
1930-06-01	82.7000
1930-07-01	82.7000
1930-08-01	82.5000
1930-09-01	82.5000
1930-10-01	82.3000
1930-11-01	81.3000
1930-12-01	81.0000
1931-01-01	80.6000
1931-02-01	80.3000
1931-03-01	80.0000
1931-04-01	80.0000
1931-05-01	79.8000
1931-06-01	79.6000
1931-07-01	79.7000
1931-08-01	79.1000
1931-09-01	78.7000
1931-10-01	78.5000
1931-11-01	77.9000
1931-12-01	77.6000
1932-01-01	76.6000
1932-02-01	76.0000
1932-03-01	75.1000
1932-04-01	74.5000
1932-05-01	73.9000
1932-06-01	73.7000
1932-07-01	73.1000
1932-08-01	72.6000
1932-09-01	72.2000
1932-10-01	71.6000
1932-11-01	70.6000
1932-12-01	70.5000
1933-01-01	69.8000
1933-02-01	69.2000
1933-03-01	68.5000
1933-04-01	68.0000
1933-05-01	67.3000
1933-06-01	66.8000
1933-07-01	66.4000
1933-08-01	66.3000
1933-09-01	66.8000
1933-10-01	66.6000
1933-11-01	66.1000
1933-12-01	66.1000
1934-01-01	66.1000
1934-02-01	65.9000
1934-03-01	65.9000
1934-04-01	65.6000
1934-05-01	65.6000
1934-06-01	66.5000
1934-07-01	66.8000
1934-08-01	66.8000
1934-09-01	66.8000
1934-10-01	66.4000
1934-11-01	65.6000
1934-12-01	65.9000
1935-01-01	66.1000
1935-02-01	66.7000
1935-03-01	66.2000
1935-04-01	65.9000
1935-05-01	66.0000
1935-06-01	66.1000
1935-07-01	65.9000
1935-08-01	66.1000
1935-09-01	66.3000
1935-10-01	66.4000
1935-11-01	66.4000
1935-12-01	66.2000
1936-01-01	66.9000
1936-02-01	68.1000
1936-03-01	67.9000
1936-04-01	67.6000
1936-05-01	68.0000
1936-06-01	68.5000
1936-07-01	69.3000
1936-08-01	69.6000
1936-09-01	70.1000
1936-10-01	71.3000
1936-11-01	71.7000
1936-12-01	72.0000
1937-01-01	72.8000
1937-02-01	73.3000
1937-03-01	73.5000
1937-04-01	73.8000
1937-05-01	74.2000
1937-06-01	74.5000
1937-07-01	75.1000
1937-08-01	75.4000
1937-09-01	75.6000
1937-10-01	75.6000
1937-11-01	74.9000
1937-12-01	74.6000
1938-01-01	73.9000
1938-02-01	72.8000
1938-03-01	72.1000
1938-04-01	71.7000
1938-05-01	70.9000
1938-06-01	70.1000
1938-07-01	69.9000
1938-08-01	69.7000
1938-09-01	70.0000
1938-10-01	69.7000
1938-11-01	69.2000
1938-12-01	69.5000
1939-01-01	69.5000
1939-02-01	69.0000
1939-03-01	69.1000
1939-04-01	69.3000
1939-05-01	68.9000
1939-06-01	69.1000
1939-07-01	69.3000
1939-08-01	69.2000
1939-09-01	70.0000
1939-10-01	71.3000
1939-11-01	72.5000
1939-12-01	73.9000
1940-01-01	75.0000
1940-02-01	74.8000
1940-03-01	74.2000
1940-04-01	74.2000
1940-05-01	74.3000
1940-06-01	74.2000
1940-07-01	74.6000
1940-08-01	75.6000
1940-09-01	75.8000
1940-10-01	75.8000
1940-11-01	76.3000
1940-12-01	76.3000
1941-01-01	76.4000
1941-02-01	76.7000
1941-03-01	76.8000
1941-04-01	77.2000
1941-05-01	78.4000
1941-06-01	79.6000
1941-07-01	80.8000
1941-08-01	81.8000
1941-09-01	82.4000
1941-10-01	83.2000
1941-11-01	83.6000
1941-12-01	83.8000
1942-01-01	84.7000
1942-02-01	85.2000
1942-03-01	85.4000
1942-04-01	85.7000