Contributions of the Third World

     The graph above is a population pyramid of Senegal for the year 2005; 
it displays the age and sex  distribution, in percent, from which past and 
future population growth can be estimated.  Up until the ages 15-19 years, 
there are  more  males  than females in each age class.  There  are  equal 
numbers of males and females in the 20-24 and 25-29 age classes.  From the 
ages 30-34  years to 85-89,  there are more females than males in each age 
class, although the  numbers for each sex are almost equal.  From the ages 
90-94 years, there are  equal numbers of  males and  females;  this is the 
highest age class for which there are living members of the population.    
     The  population  distribution  of Senegal is typical of that of third 
world countries. In this particular graph, as age decreases, the number of 
members  in  each  age  class  increases.  This  indicates a rapid rate of 
population  growth  and  the  population  increasing  dramatically  in the 
future. When looking at population pyramids of other third world countries 
(such as those of African, and South  and Central  American countries) the 
age structures generally  suggest populations experiencing  high levels of 
growth,  in  which  the  size of the  population is  projected to increase 
significantly.