The bar graph illustrates the percentage of the total world population in India, China, USA and Japan in the year 1950, 2002 and projections for 2050. In general, china contributed the most in population while Japan has least significant proportion in the time period of 150 Years. The china has highest percentage in the beginning of the year that is nearly 25% then it slightly decrease and expected to reach 15% in the end of the year. It can also be seen that USA has experienced downward trend but it is expected to remain steady in future where as the rate of population in Japan has dropped below 5% in the ending period of the year. However, India has increased gradually just above 15% in 2002 and the graph also represents that in future the rate of population in India will reach nearly 20% in 2050. 
The bar graph illustrates the percentage of the total world  
population
 in India, China, USA and Japan in the  
year
 1950, 2002 and projections for 2050.  
In general
, china contributed the most in  
population
 while Japan has  
least
 significant proportion in the time period of 150 Years. The china has  
highest
 percentage in the beginning of the  
year
  that is
  nearly
 25% then it  
slightly
  decrease
 and  
expected
 to reach 15% in the  
end
 of the  
year
. It can  
also
 be  
seen
 that USA has experienced downward trend  
but
 it is  
expected
 to remain steady in future  
where as
 the rate of  
population
 in Japan has dropped below 5% in the ending period of the  
year
.  
However
, India has increased  
gradually
  just
 above 15% in 2002 and the graph  
also
 represents that in future the rate of  
population
 in India will reach  
nearly
 20% in 2050.