The given line graph illustrates data from a report in 2008 regarding energy consumption in the USA since 1980 with predictions until 2030.
Overall, fossil fuels have shown increases in consumption since the start of the period, with expectations for even more reliance on these fuel sources. Cleaner energy sources have accounted for considerably less consumption with predictions for a similar trend.
Regarding fossil fuels such as coal, natural gas, petrol and oil, they have seen steady increases in energy consumption since 1980. Petrol and oil started at 35 quadrillion units in 1980, then fluctuated until 2000, at which point they rose steadily with a prediction of over 45 quadrillion units by 2030. Additionally, coal followed a similar rising trend. It is predicted that it will have surpassed 30 quadrillion units by 2030. Natural gas usage demonstrated fluctuations and it is set to level off at around 24 quadrillion units from 2020 onwards.
In contrast, cleaner energy fuel sources all began the period at under 5 quadrillion units and showed declines in their use, with the exception of nuclear, which climbed slightly to 6 quadrillion units in 2005 with solar/wind expecting to see slight increases. Hydropower is projected to remain relatively unchanged until 2030. 
The  
given
 line graph illustrates data from a report in 2008 regarding  
energy
  consumption
 in the USA since 1980 with predictions until 2030. 
Overall
, fossil  
fuels
 have shown increases in  
consumption
 since the  
start
 of the period, with expectations for even more reliance on these  
fuel
 sources. Cleaner  
energy
 sources have accounted for  
considerably
 less  
consumption
 with predictions for a similar trend.
Regarding fossil  
fuels
 such as coal, natural gas, petrol and oil, they have  
seen
 steady increases in  
energy
  consumption
 since 1980. Petrol and oil  
started
 at 35 quadrillion  
units
 in 1980, then fluctuated until 2000, at which point they rose  
steadily
 with a prediction of over 45 quadrillion  
units
 by 2030.  
Additionally
, coal followed a similar rising trend. It  
is predicted
 that it will have surpassed 30 quadrillion  
units
 by 2030. Natural gas usage demonstrated fluctuations and it  
is set
 to level off at around 24 quadrillion  
units
 from 2020 onwards. 
In contrast
, cleaner  
energy
  fuel
 sources all began the period at under 5 quadrillion  
units
 and  
showed
 declines in their  
use
,  
with the exception of
 nuclear, which climbed  
slightly
 to 6 quadrillion  
units
 in 2005 with solar/wind expecting to  
see
 slight increases. Hydropower  
is projected
 to remain  
relatively
 unchanged until 2030.