The line graph compares the dollars a single person spend for research in renewable source of energy by four different countries like UK, Spain Denmark and Switzerland fro1975 to 2000.
Overall, it is clear that in Spain an individual was estimated to spend about 5 dollars towards research activity at the end of the period as well as in the case of Denmark which slightly lesser than 4 dollars. However the other two countries a single person was plotted to contribute only around a dollar towards advanced studies by the year 2000.
In detail, initially all the countries started from a null point and after 5 years Denmark Switzerland and UK inhabitants managed to allot a dollar towards research while, Spain populations took initiative to give up 2 dollar. In the following years Spain peak up the track by increasing the amount acquired for research activity by 5 times higher than those of other countries in the year 2000.
After 1980, Denmark and Spain citizens allocated less than a dollar for analyzing studies through out the end of the time period with least significant contributions. By contrast, Denmark came up from baseline and maintained a steady pace for almost 10 years till 1990 I, e. more than a dollar and then picks up an inclined trend which then attains a second position at the end of the time frame. 
The line graph compares the  
dollars
 a single person spend for  
research
 in renewable source of energy by four  
different
  countries
 like UK, Spain Denmark and Switzerland fro1975 to 2000. 
Overall
, it is  
clear
 that in Spain an individual  
was estimated
 to spend about 5  
dollars
 towards  
research
 activity at the  
end
 of the period  
as well
 as in the case of Denmark which  
slightly
 lesser than 4  
dollars
.  
However
 the other two  
countries
 a single person  
was plotted
 to contribute  
only
 around a  
dollar
 towards advanced studies by the  
year
 2000.
In detail,  
initially
 all the  
countries
  started
 from a null point and after 5 years Denmark Switzerland and UK inhabitants managed to allot a  
dollar
 towards  
research
 while, Spain populations took initiative to give up 2  
dollar
. In the following years Spain peak up the  
track
 by increasing the amount acquired for  
research
 activity by 5 times higher than those of other  
countries
 in the  
year
 2000.
After 1980, Denmark and Spain citizens allocated less than a  
dollar
 for analyzing studies  
through out
 the  
end
 of the time period with  
least
 significant contributions. By contrast, Denmark came up from baseline and maintained a steady pace for almost 10 years till 1990 I, e. more than a  
dollar
 and then picks up an inclined trend which then attains a second position at the  
end
 of the time frame.