Month	Traffic Units Per Man-Hour: Seasonally Adjusted By Nber
1921-07-01	103.500
1921-08-01	99.0000
1921-09-01	100.700
1921-10-01	109.600
1921-11-01	101.200
1921-12-01	100.200
1922-01-01	105.500
1922-02-01	114.700
1922-03-01	116.600
1922-04-01	106.300
1922-05-01	103.900
1922-06-01	108.600
1922-07-01	112.300
1922-08-01	98.3000
1922-09-01	101.900
1922-10-01	104.700
1922-11-01	106.500
1922-12-01	111.600
1923-01-01	112.200
1923-02-01	106.100
1923-03-01	111.300
1923-04-01	121.600
1923-05-01	113.500
1923-06-01	112.700
1923-07-01	110.800
1923-08-01	104.900
1923-09-01	108.400
1923-10-01	105.900
1923-11-01	108.600
1923-12-01	114.400
1924-01-01	110.300
1924-02-01	120.800
1924-03-01	115.500
1924-04-01	111.400
1924-05-01	110.000
1924-06-01	114.300
1924-07-01	111.000
1924-08-01	112.100
1924-09-01	115.300
1924-10-01	115.100
1924-11-01	116.800
1924-12-01	119.200
1925-01-01	117.900
1925-02-01	117.500
1925-03-01	114.600
1925-04-01	117.200
1925-05-01	120.900
1925-06-01	121.700
1925-07-01	121.400
1925-08-01	124.200
1925-09-01	122.500
1925-10-01	119.600
1925-11-01	122.800
1925-12-01	123.800
1926-01-01	123.400
1926-02-01	120.700
1926-03-01	119.500
1926-04-01	122.300
1926-05-01	124.600
1926-06-01	126.000
1926-07-01	126.900
1926-08-01	123.700
1926-09-01	124.600
1926-10-01	126.200
1926-11-01	125.100
1926-12-01	126.300
1927-01-01	126.200
1927-02-01	125.500
1927-03-01	127.200
1927-04-01	123.900
1927-05-01	127.300
1927-06-01	121.600
1927-07-01	121.600
1927-08-01	124.200
1927-09-01	123.100
1927-10-01	126.000
1927-11-01	120.800
1927-12-01	119.600
1928-01-01	127.300
1928-02-01	130.600
1928-03-01	129.300
1928-04-01	129.900
1928-05-01	128.800
1928-06-01	126.000
1928-07-01	129.600
1928-08-01	129.400
1928-09-01	131.500
1928-10-01	134.000
1928-11-01	135.600
1928-12-01	135.300
1929-01-01	134.300
1929-02-01	137.600
1929-03-01	133.200
1929-04-01	133.400
1929-05-01	134.100
1929-06-01	135.800
1929-07-01	131.700
1929-08-01	134.200
1929-09-01	130.400
1929-10-01	129.600
1929-11-01	126.700
1929-12-01	130.000
1930-01-01	130.600
1930-02-01	132.100
1930-03-01	126.900
1930-04-01	131.300
1930-05-01	131.100
1930-06-01	134.500
1930-07-01	136.100
1930-08-01	140.800
1930-09-01	132.800
1930-10-01	137.300
1930-11-01	138.700
1930-12-01	130.800
1931-01-01	135.800
1931-02-01	131.400
1931-03-01	133.700
1931-04-01	136.600
1931-05-01	138.400
1931-06-01	135.700
1931-07-01	141.100
1931-08-01	138.900
1931-09-01	129.400
1931-10-01	134.600
1931-11-01	138.100
1931-12-01	131.100
1932-01-01	134.700
1932-02-01	133.200
1932-03-01	131.200
1932-04-01	131.900
1932-05-01	124.500
1932-06-01	122.400
1932-07-01	129.800
1932-08-01	129.400
1932-09-01	138.800
1932-10-01	146.700
1932-11-01	137.800
1932-12-01	142.200
1933-01-01	139.500
1933-02-01	140.000
1933-03-01	135.000
1933-04-01	151.900
1933-05-01	152.400
1933-06-01	164.800
1933-07-01	170.700
1933-08-01	156.100
1933-09-01	149.200
1933-10-01	147.100
1933-11-01	149.400
1933-12-01	149.800
1934-01-01	153.800
1934-02-01	153.100
1934-03-01	163.300
1934-04-01	154.900
1934-05-01	149.500
1934-06-01	152.400
1934-07-01	147.200
1934-08-01	146.700
1934-09-01	149.500
1934-10-01	143.800
1934-11-01	150.200
1934-12-01	155.600
1935-01-01	153.200
1935-02-01	158.200
1935-03-01	165.800
1935-04-01	162.700
1935-05-01	154.400
1935-06-01	161.700
1935-07-01	142.700
1935-08-01	153.900
1935-09-01	162.700
1935-10-01	159.100
1935-11-01	162.600
1935-12-01	164.300
1936-01-01	163.000
1936-02-01	165.900
1936-03-01	155.500
1936-04-01	169.500
1936-05-01	171.000
1936-06-01	164.000
1936-07-01	171.100
1936-08-01	173.200
1936-09-01	166.300
1936-10-01	170.600
1936-11-01	178.700
1936-12-01	180.300
1937-01-01	179.500
1937-02-01	174.500
1937-03-01	181.400
1937-04-01	179.300
1937-05-01	177.900
1937-06-01	162.400
1937-07-01	168.900
1937-08-01	168.900
1937-09-01	171.500
1937-10-01	174.700
1937-11-01	164.400
1937-12-01	166.600
1938-01-01	172.400
1938-02-01	161.800
1938-03-01	164.400
1938-04-01	172.300
1938-05-01	172.100
1938-06-01	167.200
1938-07-01	179.600
1938-08-01	171.200
1938-09-01	170.100
1938-10-01	175.700
1938-11-01	171.200
1938-12-01	177.100
1939-01-01	180.200
1939-02-01	168.500
1939-03-01	170.200
1939-04-01	171.500
1939-05-01	165.600
1939-06-01	174.800
1939-07-01	185.900
1939-08-01	179.400
1939-09-01	194.300
1939-10-01	193.100
1939-11-01	187.000
1939-12-01	185.600
1940-01-01	186.200
1940-02-01	184.000
1940-03-01	182.800
1940-04-01	194.000
1940-05-01	194.400
1940-06-01	194.500
1940-07-01	189.100
1940-08-01	193.200
1940-09-01	193.300
1940-10-01	182.100
1940-11-01	191.400
1940-12-01	199.800
1941-01-01	199.500
1941-02-01	198.200
1941-03-01	213.100
1941-04-01	185.600
1941-05-01	217.300
1941-06-01	218.000
1941-07-01	215.500
1941-08-01	219.900
1941-09-01	203.700
1941-10-01	201.700
1941-11-01	209.500
1941-12-01	209.600
1942-01-01	221.000
1942-02-01	223.500
1942-03-01	237.600
1942-04-01	265.300
1942-05-01	271.500
1942-06-01	258.700
1942-07-01	264.500
1942-08-01	263.300
1942-09-01	255.700
1942-10-01	256.000
1942-11-01	268.800
1942-12-01	254.600