Month	Thousands Of Pieces
1918-04-01	421.900
1918-05-01	497.600
1918-06-01	452.300
1918-07-01	422.700
1918-08-01	497.500
1918-09-01	418.400
1918-10-01	415.400
1918-11-01	369.000
1918-12-01	412.800
1919-01-01	461.300
1919-02-01	304.500
1919-03-01	340.200
1919-04-01	331.300
1919-05-01	373.400
1919-06-01	302.500
1919-07-01	381.800
1919-08-01	426.200
1919-09-01	370.300
1919-10-01	418.900
1919-11-01	398.400
1919-12-01	493.500
1920-01-01	455.900
1920-02-01	361.100
1920-03-01	415.800
1920-04-01	394.400
1920-05-01	261.200
1920-06-01	348.400
1920-07-01	398.000
1920-08-01	355.800
1920-09-01	310.500
1920-10-01	261.300
1920-11-01	204.800
1920-12-01	187.500
1921-01-01	163.100
1921-02-01	241.200
1921-03-01	330.200
1921-04-01	432.200
1921-05-01	351.100
1921-06-01	393.500
1921-07-01	374.700
1921-08-01	359.700
1921-09-01	386.900
1921-10-01	394.900
1921-11-01	373.900
1921-12-01	449.900
1922-01-01	320.700
1922-02-01	339.300
1922-03-01	397.800
1922-04-01	366.300
1922-05-01	379.000
1922-06-01	404.200
1922-07-01	375.900
1922-08-01	410.800
1922-09-01	414.800
1922-10-01	373.000
1922-11-01	411.500
1922-12-01	435.800
1923-01-01	401.800
1923-02-01	399.000
1923-03-01	497.500
1923-04-01	423.200
1923-05-01	491.700
1923-06-01	458.600
1923-07-01	378.300
1923-08-01	430.100
1923-09-01	430.400
1923-10-01	444.100
1923-11-01	461.800
1923-12-01	448.700
1924-01-01	464.400
1924-02-01	409.400
1924-03-01	420.600
1924-04-01	355.600
1924-05-01	340.400
1924-06-01	284.700
1924-07-01	293.000
1924-08-01	318.500
1924-09-01	325.300
1924-10-01	385.300
1924-11-01	399.800
1924-12-01	399.200
1925-01-01	419.900
1925-02-01	388.100
1925-03-01	444.900
1925-04-01	449.300
1925-05-01	468.200
1925-06-01	404.200
1925-07-01	417.600
1925-08-01	402.100
1925-09-01	371.500
1925-10-01	452.600
1925-11-01	385.800
1925-12-01	448.600
1926-01-01	427.200
1926-02-01	397.500
1926-03-01	4582.30
1926-04-01	419.500
1926-05-01	422.200
1926-06-01	382.400
1926-07-01	339.800
1926-08-01	302.600
1926-09-01	413.800
1926-10-01	401.600
1926-11-01	406.900
1926-12-01	470.500
1927-01-01	441.500
1927-02-01	424.000
1927-03-01	551.300
1927-04-01	492.500
1927-05-01	479.300
1927-06-01	530.900
1927-07-01	460.300
1927-08-01	486.400
1927-09-01	496.700
1927-10-01	466.500
1927-11-01	472.300
1927-12-01	468.800
1928-01-01	401.700
1928-02-01	429.100
1928-03-01	461.400
1928-04-01	255.900
1928-05-01	128.600
1928-06-01	134.200
1928-07-01	80.4000
1928-08-01	136.200
1928-09-01	113.600
1928-10-01	282.800
1928-11-01	348.700
1928-12-01	363.200
1929-01-01	403.300
1929-02-01	410.400
1929-03-01	464.500
1929-04-01	425.900
1929-05-01	527.000
1929-06-01	465.500
1929-07-01	408.700
1929-08-01	485.400
1929-09-01	381.800
1929-10-01	454.500
1929-11-01	390.500
1929-12-01	367.700
1930-01-01	420.200
1930-02-01	356.300
1930-03-01	402.300
1930-04-01	351.600