Month Thousands Of Pieces 1917-04-01 19.2000 1917-05-01 25.0000 1917-06-01 26.9000 1917-07-01 19.2000 1917-08-01 20.2000 1917-09-01 17.8000 1917-10-01 17.2000 1917-11-01 10.9000 1917-12-01 10.3000 1918-01-01 9.70000 1918-02-01 11.2000 1918-03-01 19.3000 1918-04-01 24.4000 1918-05-01 29.9000 1918-06-01 34.9000 1918-07-01 28.7000 1918-08-01 27.4000 1918-09-01 29.0000 1918-10-01 23.7000 1918-11-01 25.4000 1918-12-01 16.2000 1919-01-01 8.70000 1919-02-01 11.6000 1919-03-01 14.6000 1919-04-01 20.8000 1919-05-01 26.0000 1919-06-01 31.1000 1919-07-01 45.2000 1919-08-01 36.7000 1919-09-01 35.4000 1919-10-01 41.9000 1919-11-01 32.6000 1919-12-01 35.8000 1920-01-01 26.0000 1920-02-01 25.1000 1920-03-01 28.9000 1920-04-01 28.2000 1920-05-01 29.6000 1920-06-01 34.0000 1920-07-01 33.2000 1920-08-01 31.5000 1920-09-01 36.1000 1920-10-01 39.9000 1920-11-01 31.1000 1920-12-01 29.3000 1921-01-01 29.5000 1921-02-01 27.7000 1921-03-01 36.7000 1921-04-01 37.0000 1921-05-01 29.3000 1921-06-01 32.7000 1921-07-01 33.2000 1921-08-01 35.6000 1921-09-01 37.3000 1921-10-01 43.8000 1921-11-01 33.3000 1921-12-01 27.5000 1922-01-01 38.9000 1922-02-01 36.3000 1922-03-01 46.0000 1922-04-01 50.8000 1922-05-01 52.1000 1922-06-01 50.2000 1922-07-01 41.5000 1922-08-01 44.1000 1922-09-01 49.1000 1922-10-01 45.5000 1922-11-01 43.7000 1922-12-01 48.3000 1923-01-01 55.8000 1923-02-01 47.2000 1923-03-01 58.6000 1923-04-01 54.2000 1923-05-01 57.9000 1923-06-01 59.2000 1923-07-01 52.9000 1923-08-01 62.1000 1923-09-01 54.2000 1923-10-01 67.5000 1923-11-01 61.4000 1923-12-01 63.9000 1924-01-01 74.5000 1924-02-01 75.5000 1924-03-01 88.4000 1924-04-01 79.2000 1924-05-01 78.1000 1924-06-01 69.2000 1924-07-01 67.6000 1924-08-01 70.8000 1924-09-01 75.3000 1924-10-01 71.5000 1924-11-01 50.7000 1924-12-01 47.0000 1925-01-01 72.3000 1925-02-01 65.0000 1925-03-01 71.2000 1925-04-01 75.1000 1925-05-01 75.1000 1925-06-01 64.2000 1925-07-01 60.8000 1925-08-01 58.7000 1925-09-01 56.7000 1925-10-01 57.9000 1925-11-01 45.9000 1925-12-01 44.4000 1926-01-01 51.9000 1926-02-01 46.2000 1926-03-01 55.6000 1926-04-01 52.1000 1926-05-01 55.0000 1926-06-01 56.1000 1926-07-01 48.2000 1926-08-01 51.6000 1926-09-01 55.4000 1926-10-01 52.0000 1926-11-01 40.2000 1926-12-01 35.7000 1927-01-01 40.5000 1927-02-01 45.8000 1927-03-01 50.9000 1927-04-01 49.2000 1927-05-01 50.2000 1927-06-01 54.5000 1927-07-01 45.5000 1927-08-01 55.0000 1927-09-01 50.6000 1927-10-01 46.1000 1927-11-01 41.1000 1927-12-01 35.2000 1928-01-01 39.7000 1928-02-01 42.8000 1928-03-01 50.6000 1928-04-01 51.5000 1928-05-01 53.4000 1928-06-01 48.2000 1928-07-01 48.6000 1928-08-01 54.0000 1928-09-01 44.9000 1928-10-01 46.1000 1928-11-01 45.5000 1928-12-01 35.0000 1929-01-01 41.2000 1929-02-01 34.0000 1929-03-01 36.2000 1929-04-01 40.5000 1929-05-01 35.6000 1929-06-01 42.1000 1929-07-01 44.8000 1929-08-01 48.3000 1929-09-01 36.2000 1929-10-01 40.3000 1929-11-01 28.6000 1929-12-01 27.6000 1930-01-01 24.3000 1930-02-01 25.5000 1930-03-01 34.4000 1930-04-01 34.2000 1930-05-01 35.4000 1930-06-01 27.3000 1930-07-01 26.0000 1930-08-01 29.8000 1930-09-01 31.5000 1930-10-01 29.1000 1930-11-01 22.1000 1930-12-01 19.7000 1931-01-01 33.5000 1931-02-01 17.8000 1931-03-01 18.8000 1931-04-01 21.7000 1931-05-01 24.5000 1931-06-01 26.5000 1931-07-01 29.1000 1931-08-01 28.1000 1931-09-01 22.2000 1931-10-01 26.2000 1931-11-01 17.7000 1931-12-01 10.8000