1956－1996美国天然气和原油井口总收入*（单位：千美元）
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井口总收入
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天然气收入
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天然气收入，％
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原油收入
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原油收入％
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1956
|
8,391,067
|
1,088,848
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13
|
7,302,220
|
87
|
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1960
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9,203,752
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1,787,945
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19.4
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7,415,807
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80.6
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1965
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106,648,952
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2,502,201
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23.5
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8,146,750
|
76.5
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1970
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14,933,921
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3,748,430
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25.1
|
11,185,491
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74.9
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1975
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32,293,305
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8,847,810
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27.4
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23,445,495
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72.6
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1980
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100,015,782
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32,085,761
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32.1
|
67,930,020
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67.9
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1985
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122,232,249
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43,348,267
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35.5
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78,883,982
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64.5
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1990
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85,569,665
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31,795,384
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37.2
|
53,774,281
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62.8
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1991
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75,167,625
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30,393,200
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40.4
|
44,774,425
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59.6
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1992
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74,526,412
|
32,558,546
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43.7
|
41,967,866
|
56.3
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1993
|
74,675,593
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38,723,107
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51.9
|
35,61,959
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47.7
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1994
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68,535,821
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36,462,621
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53.2
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32,073,200
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46.8
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1995
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65,241,163
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30,235,035
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46.3
|
35,006,128
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53.7
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1996
|
86,539,088
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42,859,221
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49.5
|
43,679,867
|
50.5
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资料来源：美国《油气杂志》社《天然气统计源典》1998年
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