The graph shows the crude oil production output of Angola from 1980 to 1999. Units are measured in thousands of barrels per day. Summarise the information by selecting and reporting the main features, and make comparisons where relevant. Write at least 150 words.

The graph illustrates the crude oil production output of Angola from 1980 to 1999. In 1980, oil production was at a minimal level. However, production increased steadily each year following 1980. Although there was a slight decline in production during 1981 and 1982, oil output began to rise again after 1982. Angola’s oil production peaked […]