Aglance at the line graph provided reveals the data about energy usage in the USA during 1980 and 2030 from 2008 report. It is clearly seen that the Petrol and Oil have been the most used energy resources and it is consumption in future will ever increase.
According to the graph, from 1980 to 1990 Petrol and Oil index fluctuated steadily between 30-35 quadrillion units. Nevertheless, the consumption of these fossil fuels leveled up gradually in 1995 and in 2004 it reached 40 quadrillion units. However, in comparison with rate in 2005, until 2020 the progress of it is using did not increase. Following prediction will promise gain growth considerably to 50 quadrillion units until 2030.
The second place take Coal and Natural Gas. In 1980 Coal and Natural Gas were on the same indicator with a difference of 4 quadrillion units. Until 1990 both options did not rise enough, before in 1995 the consumption recovered slightly. The use of Coal energy jumped dramatically and as a result reached 30 quadrillion units in 2020 and will be higher until 2030, whereas the consumption of Natural Gas is still stable and will be between 25-27 quadrillion units in future.
Consuming of Nuclear, Solar and Hydropower almost have not changed. Proof of this on the graph shows that between 1980 and 2020 rate of using did not move and will remain the same until 2030. 
 Aglance
 at the line graph provided reveals the data about energy usage in the USA during 1980 and 2030 from 2008 report. It is  
clearly
  seen
 that the Petrol and Oil have been the most  
used
 energy resources and it is  
consumption
 in future will ever increase.
According to the graph, from 1980 to 1990 Petrol and Oil index fluctuated  
steadily
 between 30-35 quadrillion  
units
.  
Nevertheless
, the  
consumption
 of these fossil fuels leveled up  
gradually
 in 1995 and in 2004 it reached 40 quadrillion  
units
.  
However
,  
in comparison
 with rate in 2005, until 2020 the progress of it is using did not increase. Following prediction will promise gain growth  
considerably
 to 50 quadrillion  
units
 until 2030.
The second place take Coal and Natural Gas. In 1980 Coal and Natural Gas were on the same indicator with a difference of 4 quadrillion  
units
. Until 1990 both options did not rise  
enough
,  
before
 in 1995 the  
consumption
 recovered  
slightly
. The  
use
 of Coal energy jumped  
dramatically
 and  
as a result
 reached 30 quadrillion  
units
 in 2020 and will be higher until 2030, whereas the  
consumption
 of Natural Gas is  
still
 stable and will be between 25-27 quadrillion  
units
  in future
.
Consuming of Nuclear, Solar and Hydropower almost have not  
changed
. Proof of this on the graph  
shows
 that between 1980 and 2020 rate of using did not  
move
 and will remain the same until 2030.