The given are two pie charts showing the proportion of electricity production in five different sources, which located in France in 1990 and 2010.
In general, natural gas and coal were equally important as the main sources in 1990; however, nuclear power, which was the only source, become the significant source in 2010. Both charts also illustrate that the hydro power was used less than any other sources.
In 1990, electricity production by coal and natural gas were both standing at 28% compared to the trend in 2010, where natural gas and coal dramatically dropped to 4% and 13% respectively.
It is clear that nuclear power generated 17% in 1990, which rose considerably to 67% after 20 years.
Whereas the percentage of oil was 28% in 1990, it plummeted to 13% in 2010; in addition, hydro power stood at 6% of the total electricity production, but it reached a low percentage at only 2% in 2010. 
The  
given
  are
 two pie charts showing the proportion of electricity production in five  
different
  sources
, which located in France in 1990 and 2010. 
In general
, natural gas and coal were  
equally
  important
 as the main  
sources
 in 1990;  
however
, nuclear  
power
, which was the  
only
  source
, become the significant  
source
 in 2010. Both charts  
also
 illustrate that the hydro  
power
 was  
used
 less than any other sources.
In 1990, electricity production by coal and natural gas were both standing at 28% compared to the trend in 2010, where natural gas and coal  
dramatically
 dropped to 4% and 13%  
respectively
.
It is  
clear
 that nuclear  
power
 generated 17% in 1990, which rose  
considerably
 to 67% after 20 years.
Whereas the percentage of oil was 28% in 1990, it plummeted to 13% in 2010;  
in addition
, hydro  
power
 stood at 6% of the total electricity production,  
but
 it reached a low percentage at  
only
 2% in 2010.