"c VAR 0627 02083 RR MLG 877-963 MD= 1E-37 " "c REF 0627 LOC 565 WIDTH 9 DK 9 COL 71-79 " "c EXP DEC= 1 " "c " "c INCREASES IN RAILROAD TRACK MILEAGE OPERATED, INTERSTATE " "c COMMERCE COMMISSION. " "c -------------------------------------------------------- " "c " "c NBER SERIES: 02083 " "c AREA COVERED: U.S. " "c UNITS: THOUSAND MILES " "c ANNUAL COVERAGE: 1877-1963 " "c QUARTERLY COVERAGE: NONE " "c MONTHLY COVERAGE: NONE " "c SEASONAL ADJUSTMENT: NONE " "c SOURCE: 1877-1890:"HISTORICAL STATISTICS OF THE UNITED " "c STATES, COLONIAL TIMES TO 1957," BUREAU OF THE CENSUS, " "c SERIES Q17. 1891-1956: IBID., SERIES Q48. 1957-1962: IBID., " "c "CONTINUATION TO 1962 AND REVISIONS," BUREAU OF THE CENSUS, " "c FEBRUARY 1965, SERIES Q48. 1963:"TRANSPORT STATISTICS IN " "c THE UNITED STATES, PART 1", INTERSTATE COMMERCE COMMISSION, " "c BUREAU OF TRANSPORT ECONOMICS AND STATISTICS. " "c " "c NOTES: THESE DATA ARE YEAR-TO-YEAR CHANGES IN TOTAL OPERATED " "c TRACK MILEAGE AS PUBLISHED IN THE ABOVE SOURCES. DATA ON " "c INCREASES FOR THE YEARS 1877-90 AND 1917-63, ARE FOR " "c CALENDAR YEARS; THOSE FOR 1891-1916 ARE FOR YEARS ENDING " "c JUNE 30. DATA ON OPERATED TRACK MILEAGE ARE COMPILED BY THE " "c INTERSTATE COMMERCE COMMISSION. DATA FOR 1876-90 ARE FROM " "c "RAILWAY STATISTICS BEFORE 1890," ICC STATEMENT NO. 32151 " "c (MIMEOGRAPHED), 1932. FOR THESE HISTORICAL DATA THE ICC USED " "c THE ANNUAL"POOR'S MANUAL OF RAILROADS." DATA FOR 1891-1954 " "c ARE FROM ICC,"STATISTICS OF RAILWAYS IN THE UNITED STATES." " "c LATER DATA ARE FROM"TRANSPORT STATISTICS IN THE UNITED " "c STATES, PART 1." " "c OPERATED TRACK INCLUDES MAIN TRACKS, YARD TRACKS, AND " "c SIDINGS. THE DATA COVER CLASS I, II, AND III RAILROADS. " "c PRIOR TO 1908 THEY ALSO INCLUDED SWITCHING AND TERMINAL " "c COMPANIES."CIRCULAR" AND UNOFFICIAL ROADS ARE EXCLUDED. " "c ALASKA AND HAWAII ARE INCLUDED BEGINNING WITH DATA FOR 1960. " "c EACH COMPANY REPORTED ITS TOTAL OPERATED TRACK MILEAGE; " "c SINCE TWO COMPANIES MIGHT OPERATE THE SAME TRACK, THERE IS " "c SOME DUPLICATION. DATA FOR DIFFERENT YEARS ARE OFTEN NOT " "c ENTIRELY COMPARABLE BECAUSE OF CHANGES IN ACCOUNTING AND " "c REPORTING METHODS. " "c " "c ORIGINALS MISSING; NOT PROOFREAD. " "c ............................................................... " -1 1877. 1963. 2.60000 6.30000 1.10000 10.9000 14.8000 10.4000 8.20000 7.30000 4.10000 7.40000 17.0000 6.40000 10.7000 6.10000 7.60000 3.60000 10.8000 7.90000 3.50000 5.90000 2.90000 3.30000 4.80000 8.60000 6.60000 8.80000 9.70000 13.3000 9.70000 10.3000 10.9000 5.70000 8.70000 9.40000 11.1000 8.40000 8.30000 7.70000 3.90000 3.80000 3.30000 2.00000 1.50000 2.70000 1.00000 1.80000 3.60000 2.00000 2.90000 3.40000 3.40000 3.00000 1.30000 0.800000 -0.100000 -1.40000 -2.70000 -3.30000 -3.20000 -2.80000 -1.80000 -3.20000 -3.00000 -2.40000 -2.40000 -4.00000 -0.900000 -0.300000 -0.400000 0.000000 -0.700000 -0.200000 0.000000 -0.900000 -0.500000 -1.20000 -0.900000 -1.20000 -1.60000 -1.30000 -2.70000 -1.70000 -1.40000 -2.20000 -2.30000 -3.10000 -1.80000