Month	Average Monthly Shipments (1926=100)
1919-01-01	103.400
1919-02-01	80.1000
1919-03-01	108.500
1919-04-01	107.000
1919-05-01	124.400
1919-06-01	123.900
1919-07-01	180.000
1919-08-01	158.500
1919-09-01	146.900
1919-10-01	195.600
1919-11-01	197.200
1919-12-01	211.200
1920-01-01	231.400
1920-02-01	176.400
1920-03-01	178.700
1920-04-01	137.900
1920-05-01	130.400
1920-06-01	118.200
1920-07-01	94.9000
1920-08-01	76.3000
1920-09-01	68.9000
1920-10-01	58.8000
1920-11-01	38.9000
1920-12-01	36.5000
1921-01-01	22.9000
1921-02-01	23.7000
1921-03-01	25.6000
1921-04-01	23.0000
1921-05-01	24.6000
1921-06-01	23.4000
1921-07-01	14.4000
1921-08-01	17.5000
1921-09-01	14.0000
1921-10-01	19.6000
1921-11-01	19.4000
1921-12-01	23.1000
1922-01-01	24.9000
1922-02-01	24.7000
1922-03-01	26.7000
1922-04-01	34.6000
1922-05-01	41.8000
1922-06-01	48.0000
1922-07-01	50.0000
1922-08-01	43.6000
1922-09-01	53.3000
1922-10-01	52.0000
1922-11-01	52.8000
1922-12-01	57.7000
1923-01-01	70.3000
1923-02-01	71.2000
1923-03-01	102.300
1923-04-01	76.6000
1923-05-01	78.3000
1923-06-01	62.8000
1923-07-01	64.9000
1923-08-01	83.5000
1923-09-01	76.9000
1923-10-01	62.9000
1923-11-01	78.3000
1923-12-01	66.2000
1924-01-01	62.2000
1924-02-01	67.6000
1924-03-01	72.8000
1924-04-01	59.1000
1924-05-01	48.9000
1924-06-01	35.5000
1924-07-01	40.5000
1924-08-01	39.4000
1924-09-01	40.8000
1924-10-01	52.7000
1924-11-01	49.2000
1924-12-01	57.8000
1925-01-01	57.8000
1925-02-01	63.1000
1925-03-01	74.3000
1925-04-01	72.6000
1925-05-01	75.1000
1925-06-01	88.1000
1925-07-01	85.1000
1925-08-01	89.4000
1925-09-01	82.9000
1925-10-01	115.200
1925-11-01	104.800
1925-12-01	90.1000
1926-01-01	80.6000
1926-02-01	80.7000
1926-03-01	101.600
1926-04-01	74.2000
1926-05-01	62.3000
1926-06-01	103.200
1926-07-01	96.1000
1926-08-01	92.6000
1926-09-01	107.800
1926-10-01	108.400
1926-11-01	96.9000
1926-12-01	74.5000
1927-01-01	68.0000
1927-02-01	79.2000
1927-03-01	84.1000
1927-04-01	69.9000
1927-05-01	70.6000
1927-06-01	76.9000
1927-07-01	71.8000
1927-08-01	94.5000
1927-09-01	58.9000
1927-10-01	74.0000
1927-11-01	74.4000
1927-12-01	93.7000
1928-01-01	120.700
1928-02-01	111.300
1928-03-01	123.000
1928-04-01	122.000
1928-05-01	113.900
1928-06-01	119.000
1928-07-01	113.100
1928-08-01	133.700
1928-09-01	147.100
1928-10-01	157.600
1928-11-01	161.100
1928-12-01	152.200
1929-01-01	161.900
1929-02-01	186.300
1929-03-01	185.500
1929-04-01	177.300
1929-05-01	185.400
1929-06-01	161.700
1929-07-01	143.400
1929-08-01	165.300
1929-09-01	133.600
1929-10-01	178.700
1929-11-01	99.1000
1929-12-01	91.8000
1930-01-01	100.900
1930-02-01	94.4000
1930-03-01	100.500
1930-04-01	99.3000
1930-05-01	74.9000
1930-06-01	69.8000
1930-07-01	50.5000
1930-08-01	63.1000
1930-09-01	75.4000
1930-10-01	50.0000
1930-11-01	33.5000
1930-12-01	38.2000
1931-01-01	37.1000
1931-02-01	46.4000
1931-03-01	65.2000
1931-04-01	58.3000
1931-05-01	48.4000
1931-06-01	40.8000
1931-07-01	34.1000
1931-08-01	39.8000
1931-09-01	31.1000
1931-10-01	24.7000
1931-11-01	28.2000
1931-12-01	37.5000
1932-01-01	32.8000
1932-02-01	20.8000
1932-03-01	18.1000
1932-04-01	22.8000
1932-05-01	21.6000
1932-06-01	20.6000
1932-07-01	14.0000
1932-08-01	15.7000
1932-09-01	16.3000
1932-10-01	15.2000
1932-11-01	17.7000
1932-12-01	19.8000
1933-01-01	17.5000
1933-02-01	8.40000
1933-03-01	7.40000
1933-04-01	9.00000
1933-05-01	15.3000
1933-06-01	22.1000
1933-07-01	29.9000
1933-08-01	31.8000
1933-09-01	30.9000
1933-10-01	37.2000
1933-11-01	45.9000
1933-12-01	70.0000
1934-01-01	53.7000
1934-02-01	50.9000
1934-03-01	48.1000
1934-04-01	46.5000
1934-05-01	45.9000
1934-06-01	35.3000
1934-07-01	34.7000
1934-08-01	41.4000
1934-09-01	36.2000
1934-10-01	43.9000
1934-11-01	52.4000
1934-12-01	66.1000
1935-01-01	65.5000
1935-02-01	53.0000
1935-03-01	62.3000
1935-04-01	65.6000
1935-05-01	73.3000
1935-06-01	91.1000
1935-07-01	119.800
1935-08-01	125.800
1935-09-01	80.0000
1935-10-01	102.900
1935-11-01	98.6000
1935-12-01	98.3000
1936-01-01	110.800
1936-02-01	112.100
1936-03-01	105.300
1936-04-01	125.700
1936-05-01	118.900
1936-06-01	128.800
1936-07-01	150.100
1936-08-01	127.500
1936-09-01	118.500
1936-10-01	136.500
1936-11-01	147.100
1936-12-01	257.700
1937-01-01	200.300
1937-02-01	165.200
1937-03-01	211.600
1937-04-01	282.500
1937-05-01	208.500
1937-06-01	191.800
1937-07-01	171.100
1937-08-01	179.800
1937-09-01	210.700
1937-10-01	152.000
1937-11-01	127.700
1937-12-01	142.700
1938-01-01	118.400
1938-02-01	75.7000
1938-03-01	107.000
1938-04-01	90.3000
1938-05-01	66.7000
1938-06-01	70.2000
1938-07-01	89.6000
1938-08-01	120.900
1938-09-01	117.400
1938-10-01	118.100
1938-11-01	112.200
1938-12-01	146.500
1939-01-01	148.400
1939-02-01	167.000
1939-03-01	185.400
1939-04-01	159.000
1939-05-01	213.300
1939-06-01	208.200
1939-07-01	226.900
1939-08-01	203.700
1939-09-01	353.900
1939-10-01	474.600
1939-11-01	509.500
1939-12-01	602.400
1940-01-01	388.100
1940-02-01	369.500
1940-03-01	283.500
1940-04-01	290.700
1940-05-01	33.9000
1940-06-01	390.700
1940-07-01	359.500
1940-08-01	458.000
1940-09-01	621.900
1940-10-01	945.500
1940-11-01	694.100
1940-12-01	685.400
1941-01-01	867.200
1941-02-01	777.600
1941-03-01	773.700
1941-04-01	739.400
1941-05-01	716.100
1941-06-01	926.600
1941-07-01	1018.80
1941-08-01	1087.60
1941-09-01	1013.20
1941-10-01	909.500
1941-11-01	1066.10
1941-12-01	1292.60
1942-01-01	1238.60
1942-02-01	1614.10
1942-03-01	4356.10
1942-04-01	2966.30
1942-05-01	2195.80
1942-06-01	1965.00
1942-07-01	1558.50
1942-08-01	1283.40
1942-09-01	1107.20
1942-10-01	1047.40
1942-11-01	1176.90
1942-12-01	869.100
1943-01-01	743.100
1943-02-01	892.700
1943-03-01	1180.90
1943-04-01	859.400
1943-05-01	718.300
1943-06-01	645.800
1943-07-01	461.000
1943-08-01	453.400
1943-09-01	435.900
1943-10-01	401.100
1943-11-01	446.400
1943-12-01	383.300
1944-01-01	349.600
1944-02-01	398.800
1944-03-01	485.500
1944-04-01	667.700
1944-05-01	693.000
1944-06-01	629.300
1944-07-01	426.500
1944-08-01	508.100
1944-09-01	432.600
1944-10-01	719.100
1944-11-01	735.800
1944-12-01	752.900
1945-01-01	686.800
1945-02-01	666.800
1945-03-01	634.800
1945-04-01	557.000
1945-05-01	505.500
1945-06-01	408.600
1945-07-01	328.900
1945-08-01	319.100
1945-09-01	269.400
1945-10-01	312.700
1945-11-01	281.600
1945-12-01	375.200
1946-01-01	362.900
1946-02-01	257.200
1946-03-01	335.900
1946-04-01	387.500
1946-05-01	338.200
1946-06-01	338.100
1946-07-01	314.300
1946-08-01	312.000
1946-09-01	274.000
1946-10-01	268.900
1946-11-01	237.900
1946-12-01	230.200
1947-01-01	225.400
1947-02-01	199.200
1947-03-01	231.600
1947-04-01	216.200
1947-05-01	237.600
1947-06-01	282.600