The graph below gives information about U.S. government spending on research between 1980 and 2008. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The chart illustrates how much US government budgets were poured into research across four specific

sectors

over a 28-year period from 1980, measured in billions of dollars.

Overall

, the expenditures allocated for other

sectors

dropped slightly,

whereas

those for the rest encountered rises of varying degrees, with the most pronounced growth being seen in Health, which ended up as the field with the most funding by far. Looking first at the financial allocations sponsored for

the

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Health and

the

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Space, the former commenced the period at just north of 8

billion

dollars, which was 2

billion

more than the corresponding figures for the latter, at around 6

billion

.

Thereafter

, there was a remarkable escalation in the funding of Health, finishing at nearly 18

billion

, despite reaching a zenith of over 22

billion

in 2004. Similar changes, but to a lesser extent, can be observed in Space's data, increasing fairly to just shy of 9

billion

at the end

. Turning to the remaining

sectors

, the disparity between them, in terms of funds, was more obvious over time. The energy industry accumulated more subsidies, from 5 to about 7

billion

after

this

period. As for General Science, its expenditures showed a twofold rise from 2.5 to 5

billion

in the first 2 decades

,

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and

then

remained unchanged.

Finally

, 7.5

billion

was sponsored for unspecified

sectors

in 1980, with a fall to 5

billion

after 4 years and a prolonged plateau that persisted until 2008.