Band 4+: The chart below shows the figures for imprisonment in five countries between 1930 and 1980. Write a report for a university, lecturer describing the information shown below.

The image shows a bar graph with data from 5 countries—Great Britain, Australia, New Zealand, United States, and Canada—across 6 decades—1930, 1940, 1950, 1960, 1970, 1980. Units on Y-axis range from 0 to 160 with intervals of 20. In 1930, Great Britain and Australia have identical highest values at 120, followed by New Zealand at 100, the United States at 80, and Canada at 60. In 1940, Australia leads at 160, Great Britain at 140, New Zealand at 120, the United States at 100, and Canada at 80. For 1950, Australia's value decreases to 140, Great Britain and New Zealand both at 120, the United States at 100, and Canada at 80. In 1960, New Zealand's data rises to 140, Great Britain at 120, Canada increases to 100, Australia drops to 100, and the United States remains at 100. The 1970 data show New Zealand and Great Britain both at 120, the United States at 100, Australia at 80, and Canada at 60. Finally, in 1980, Australia, United States, and Canada are at 100, Great Britain at 80, and New Zealand drops to 60.