The given line graph exhibits the total expenditure by the US government on various research fields of health, space, energy, general science and others over the period of 1980 to 2008.
Health sector has held the focal point for the US government in terms of research throughout the years. The government has increased the funding from 15 billion dollars in 1980, to 25 billion dollars in 2004. However, the amount has been reduced to approximately 18 billions in 2008. Expenditures on energy exhibited various fluctuations in 1992, after staying at a consistent level for initial 12 years. Space research received roughly 7 billions in 1980, but it has been increased upto 9 billions in 2008, by the government. General science, on the other hand, showed a noticeable increase throughout the years and gained the attention of the US government in terms of research purposed. The funds allocated to miscellaneous fields experienced various changes in trend.
In summary, it can clearly be concluded that health has always been the priority area of research for the US government over the years and has been granted with the most of the money.