The bar graph shows the number of detainees in five countries – Britain, Australia, New Zealand, US and Canada between 1930 and 1980. Overall, Canada had the highest number of prisoners in 1930 while Great Britain had the least, but after 50 years, the number of prisoners decreased in Canada and the United States had the highest prisoners.

Initially, in 1930, Canada had 120 thousand prisoners and that was the highest number of inmates among the five countries. There were 100 thousand prisoners both in the US and New Zealand. Again, Australia had around 70 thousand