As can be inferred from the graph, over all the categories examined, researches of Health and General Science witnessed significant increases throughout the timespan, while a similar erratic pattern occurred in all the other categories.

At the beginning of the period recorded, ‘Health’ and ‘General Science’ held respective figures of around 8 billion and 2.5 billion dollars. Studies of health-related subject spending suffered a sudden dip of $2 billion at the first phase; this, however, was enormously stimulated shortly after. In particular, in 2004, the figure went up by more than twice the original number, before dropping again to approximately 20 billion dollars at the end. On the other hand, general scientific studies’ subsidy experienced a steady growth with the statistic slightly appreciated on every interval, resulting in a two-fold increment, at about $6 billion.

The other three, namely ‘Space’, ‘Energy’ and ‘Other’, simultaneously fluctuated. Nonetheless, a slight increase of a mere billion dollars in spending for space-and-energy-related researches was seen, leading to their final figure of $7 billion as against $9 billion. Meanwhile, only expenditure on subjects other than the ones listed witnessed a negligible decline of shy of $1 billion.

As can be inferred from the graph, health receives the most significant fund while the expense for general science registered the lowest across 5 categories examined. It also health which has the sharpest rise throughout the surveyed time-span.

In the year of 1980, the expenditure on research for health stood at 8 billion $. 4 years later, it experienced a minor dip to 6 billion dollars. Then, the figure soared significantly and hit a peak of 21 billion dollars in 2004. At the end of the surveyed time-span, the statistic ended up at 20 billion dollars, which is doubled than its starting point. Such discrepancies are seen in the expenditure of general science. The expense was 3 billion dollars in 1980, remained relatively unchanged to 1994, which then experienced a negligible rise up to 5 billion dollars in 1998 and continued its gradual increase. This data finished at just above 5 billion dollars in 2008.

Regarding the energy’s allocation, it started off a 5 billion dollars and ended up at 6 billion $. The figure was erratic over 28 years with only once reaching its peak at 8 billion dollars in 1997. Similarly, space expense registered at 6 billion dollars in 1980. The statistic fell to 5 billion dollars and leveled off to 1990 when a slight increase was seen. The figure continues its tendency to flat out and rise once again to 9 billion dollars in 2008.

In 1980, US government disbursed $7.5 billion on researching in health. That figure decreased slightly to about $6 billion in 1984 and swiftly recovered. The expense in health rocketed to approximately $10 billion in 1987 before reaching a peak of about $22 billion in 2004 and then declined slightly to $19.5 billion at the end of the timespan. Regarding general science, the state expenditure was merely $2.5 billion in 1980. It remained stable until 1994, before that expenditure experienced a two folds growth at $5 billion in 1998, prior to increasing to $6 billion in 2008.

At the beginning of the timespan, the government invested $5 billion on energy. The expense had an erratic pattern in the period from 1980 to 1991.  Subsequently, there was a significant rise in the spending on energy, at approximately $8 billion in 1997. The figure declined $3 billion, at $5 billion in 2000 and then recovered slightly to $7 billion in 2008. Regarding space, the spending was $7.5 billion in 1980. It decreased marginally to $5 billion in 1984 before reaching a peak of $9 billion in 2004.  Besides, the initial states expenditure on other fields was $7.5 billion. It declined slightly to $5 in 1983 before reaching a plato in 1990. The figure hit the highest point, at $7.5 billion in 2001 and then fell slightly. 

As can be inferred from the graph, it is clear that the spending on health experienced a pronounced rose as it was the highest expenditure spent; on the other hand, the spending of energy and other witnessed an erratic pattern. Meanwhile, the trends for general science and space marginally increase.

In the year 1980, the spending of health stood at about 8 billions dollars, then witnessed a slight decrease in 1984. This figure recovered at 10 billions dollars in 1988 and remarkably hitting it’s peak at approximately 21 billions dollars in 2004, before sliding down to 19 billions dollars at the end of the period. Regarding General Science, It was first shown at the number of 2,5 billions dollars, then remained consistent until 1994, after that slenderly grew to 5 billions dollars in 1998 and fluctuated over the 10 years time span starting then. Similarly, the Space category started at a higher number of 7.5 billions dollars, then barely decrease 2.5 billions dollars, which recovered to the original figure in 1994. This expenditure, however, remained unchanged to 2000, then rise steadily to north of 9 billions dollars before reaching a plateau.

Conversely, the research expenditure on Other & energy and stood at 7.5 billions dollars and 5 billions dollars respectively. Both of the categories undergo a fluctuation with the peak of Other and Energy at approximately 7.5 billions dollars.

As can be inferred from the graph, the US spent the largest amount of money on research into Health, while the amount of investment they consumed on General Science was the lowest.

Starting at $10 billion in 1980, the highest commencement of all five fields, the government’s expenditure on research into Health slightly declined to $5 billion in 1984 and then recovered. Noticeably, the figure soared and hit a peak of nearly $25 billion in 2004. The expenditure on Health research moderately decreased to approximately $18 billion in 2008; however, it was still by far the highest. Meanwhile, the disbursement of money spent on researching General Science was the lowest of all categories, beginning at $2.5 billion in 1980 and increasing to just over $5 billion by 2008.

It is of note that the government’s expenditure on research into Energy, Space and Other witnessed an erratic pattern. The amount of money spent on Energy and Space started from approximately $5 billion and $6 billion in 1980 to around $7.5 billion and $9 billion in 2008, respectively. Contrary to the residue, the Other was the only field that fell from $7.5 billion in 1980 to about $5 billion after 28 years, experienced an overall decrease.