The line graph illustrates the percentage of Chileans by four age groups from 1975 to 2035.
Overall, it is clear that the proportion of Chilean in 15-64 years and over 65 years was increased during the whole survey. Additionally, the percentage of Chilean in 0-14 years was declined.
In 1975, The percentage of Chilean in 15-64 years was the highest, at 52, followed by 38% of 0-14 years. 5% of Chileans over 65 years is the lowest in 1975. From 1975 to 2015, the percentage of Chileans was increased significantly and reaches the highest point at 70%. Meanwhile, the proportion of the oldest age group in Chile was rose slightly, at 11%. By contrast, the percentage of the youngest age group was decreased sharply and gradually, from 38% to 22%.
From 2015 to 2035, the proportion in 15-64 years in Chile will be fell dramatically, at 61%. At the same time, the percentage of Chileans in 0-14 years will be dipped steadily and hit a low of 17%. By contrast, the proportion of Chileans over 65 years will be ascended slowly, from 11% to 14%. 
The line graph illustrates the  
percentage
 of Chileans by four age groups from 1975 to 2035. 
Overall
, it is  
clear
 that the  
proportion
 of Chilean in 15-64 years and over 65 years  
was increased
 during the whole survey.  
Additionally
, the  
percentage
 of Chilean in 0-14 years  
was declined
.
In 1975, The  
percentage
 of Chilean in 15-64 years was the highest, at 52, followed by 38% of 0-14 years. 5% of Chileans over 65 years is the lowest in 1975. From 1975 to 2015, the  
percentage
 of Chileans  
was increased
  significantly
 and reaches the highest point at 70%. Meanwhile, the  
proportion
 of the oldest age group in Chile was rose  
slightly
, at 11%. By contrast, the  
percentage
 of the youngest age group  
was decreased
  sharply
 and  
gradually
, from 38% to 22%.
From 2015 to 2035, the  
proportion
 in 15-64 years in Chile will be fell  
dramatically
, at 61%. At the same time, the  
percentage
 of Chileans in 0-14 years will  
be dipped
  steadily
 and hit a low of 17%. By contrast, the  
proportion
 of Chileans over 65 years will  
be ascended
  slowly
, from 11% to 14%.