The bar graph below shows the consumption of natural gas world wide from 1950 to 1990.

The bar chart compares the

amount

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of

energy

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consumed by five

power

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sources in 1998 and 2002.

Overall

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, petroleum used by far the most

energy

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, followed by natural

gas

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and coal

while

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nuclear electric

power

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and renewable

energy

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did not spend as much. The level of

energy

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consumption tended to rise in 2002 except for renewable

energy

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. Starting with the graph for 1998, the

amount

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of

energy

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that petroleum consumed was incredibly higher than any other fuel with approximately 36.

Furthermore

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, an almost equal

amount

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of

energy

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was spent by coal and natural

gas

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with just above 20 and 23 respectively.

In addition

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, nuclear

power

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and renewable

energy

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were the sources of

power

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with little expenditure of

energy

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, both using less than 10 with the graph for the former standing at about 7 and that for the latter being slightly lower with just above 5. Turning to the charts of 2002, there was an insignificant increase in the

amount

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of

energy

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spent by coal and natural

gas

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by less than one from that of 1998.

Moreover

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, the consumption level of petroleum and natural

gas

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rose more distinctively, jumping from about 36 in 1998 to around 37 in 2002 and from about 7 to below 10 respectively, which made the former the most dominant consumer.

In contrast

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, regardless of all these rising trends, renewable

energy

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was the only source of

power

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which experienced a minor decline.