Write a band 8 IELTS report writing of 170 words on this question

You should spend about 20 minutes on this task.

The bar chart below shows the proportion of the population aged 65 and over of three countries in 1980 and 2000 and prediction in 2030.

Summarise the information by selecting and reporting the main features and make comparisons where relevant.

Write at least 150 words.