The diagrams illustrate the size of the ozone hole over Antarctica and the amount of three different types of gases that damaged the layer from 1980 to 2000.
Overall, the size of the ozone hole grew larger over the entire period. The production of CFC-12 and N2O increased, but the average release of CFC-11 declined.
The size of the ozone hole increased from around 500,000 km² to 2,000,000 km² from 1980 to 1990, followed by a decline to roughly 1,000,000 km² in the next three years. However, a drastic increase was witnessed afterward, and the size reached 4,000,000 km² in 2000, which was around 8 times more than in 1980.
The amount of CFC-11 emissions was the highest in 1980, at about 70 million tonnes. It remained mostly stable from 1980 to 1983, then experienced a continuous decrease over the period, to less than 10 million tons in 2000. The production of CFC-12, on the contrary, remained a slow increase from 30 million tons to about 40 million tons. N2O, however, only appeared after 1990, increased dramatically from 0 to 30 million tons over 10 years, which might have contributed to the increase of the ozone hole after 1993.