/usr/share/gretl/data/data9-8.gdt is in gretl-data 1.9.9-1.
This file is owned by root:root, with mode 0o644.
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<!DOCTYPE gretldata SYSTEM "gretldata.dtd">
<gretldata name="data9-8" frequency="1" startobs="1947" endobs="1987" type="time-series">
<description>
DATA9-8:
Annual data for estimating Domestic Revenue Passenger Miles.
Source: Statistical Abstract of United States, 1947-1989.
Data compiled by GRAHAM RUSHALL.
pop = population in millions (Range 144.83 - 243.915)
rpm = domestic revenue passenger miles in billions (Range 6 - 324.5)
nop = number of operators (airlines), Range 31 - 106.
oprev = operating revenue from passengers in millions of dollars
(Range 256 - 37309)
gnp = gross national product of United States in billions of dollars
(Range 232.2 - 4526.7)
accid = number of American planes in an accident (Range 12 - 69)
fatal = number of fatalities from aircraft accidents (Range 0 - 460)
regu = dummy variable for airline regulation/deregulation
= for 1 1979-87 and 0 for 1947-78.
</description>
<variables count="9">
<variable name="year"/>
<variable name="pop"
label="population in millions (Range 144.83 - 243.915)"/>
<variable name="rpm"
label="domestic revenue passenger miles (billions, 6 - 324.5)"/>
<variable name="nop"
label="number of operators (airlines), Range 31 - 106."/>
<variable name="oprev"
label="operating revenue from passengers ($ millions)"/>
<variable name="gnp"
label="GNP of United States ($ billions)"/>
<variable name="accid"
label="number of American planes in an accident (Range 12 - 69)"/>
<variable name="fatal"
label="number of fatalities from aircraft accidents (Range 0 - 460)"/>
<variable name="regu"
label="deregulation dummy (1 for 1979-87, 0 before)"/>
</variables>
<observations count="41" labels="false">
<obs>1947 144.083 6.1 40 256 232.2 52 255 0 </obs>
<obs>1948 146.730 6.0 44 312 257.3 67 158 0 </obs>
<obs>1949 149.304 6.7 50 389 257.3 43 110 0 </obs>
<obs>1950 152.271 8.0 54 445 284.8 41 165 0 </obs>
<obs>1951 154.878 10.6 50 591 328.2 55 210 0 </obs>
<obs>1952 157.553 12.5 48 695 345.4 56 157 0 </obs>
<obs>1953 160.184 14.8 46 804 363.2 43 105 0 </obs>
<obs>1954 163.026 16.8 47 906 361.2 54 23 0 </obs>
<obs>1955 165.931 19.9 47 1065 398.0 46 225 0 </obs>
<obs>1956 168.903 22.4 43 1193 419.2 53 156 0 </obs>
<obs>1957 171.984 25.4 44 1348 442.8 51 78 0 </obs>
<obs>1958 174.882 25.3 45 1432 444.5 63 149 0 </obs>
<obs>1959 177.830 29.3 45 1722 482.8 69 310 0 </obs>
<obs>1960 180.671 30.6 49 1860 507.0 67 378 0 </obs>
<obs>1961 183.691 31.1 41 1951 520.1 58 135 0 </obs>
<obs>1962 186.538 33.6 45 2167 560.3 43 183 0 </obs>
<obs>1963 189.242 38.5 45 2374 589.2 49 145 0 </obs>
<obs>1964 191.889 44.1 44 2701 628.7 53 226 0 </obs>
<obs>1965 194.303 51.9 49 3142 691.0 63 253 0 </obs>
<obs>1966 196.560 60.6 49 3534 749.9 54 72 0 </obs>
<obs>1967 198.712 75.5 44 4260 793.5 51 255 0 </obs>
<obs>1968 200.706 87.5 37 4913 865.7 54 298 0 </obs>
<obs>1969 202.677 102.7 37 5943 932.3 48 152 0 </obs>
<obs>1970 205.052 104.1 36 6359 1015.5 39 3 0 </obs>
<obs>1971 207.661 106.4 38 6736 1063.4 41 194 0 </obs>
<obs>1972 209.896 118.1 35 7565 1171.0 43 186 0 </obs>
<obs>1973 211.909 126.3 33 8379 1307.0 32 217 0 </obs>
<obs>1974 213.854 129.7 31 9903 1434.0 43 460 0 </obs>
<obs>1975 215.973 131.7 35 10290 1598.4 29 122 0 </obs>
<obs>1976 218.035 145.3 32 12104 1783.0 21 36 0 </obs>
<obs>1977 220.239 156.6 32 13772 1991.0 18 75 0 </obs>
<obs>1978 222.585 182.7 36 15753 2250.0 19 16 0 </obs>
<obs>1979 225.055 208.9 52 18930 2508.0 18 352 1 </obs>
<obs>1980 227.757 200.8 63 23317 2732.0 15 0 1 </obs>
<obs>1981 230.138 198.7 98 25504 3052.6 25 4 1 </obs>
<obs>1982 232.520 210.1 98 25440 3166.0 15 233 1 </obs>
<obs>1983 234.799 226.9 96 27346 3405.7 22 15 1 </obs>
<obs>1984 237.001 243.7 95 31437 3772.2 12 4 1 </obs>
<obs>1985 239.279 270.6 106 33343 4014.9 17 197 1 </obs>
<obs>1986 241.613 302.1 93 33814 4240.3 20 0 1 </obs>
<obs>1987 243.915 324.5 93 37309 4526.7 31 231 1 </obs>
</observations>
</gretldata>
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