The diagram illustrates the size of the ozone hole over Antarctica and the amount of three different types of gases that damaged the layer from 1880 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 3 years. However, a drastic growth was witnessed afterward, and the size reached 4,000,000 km2 in 2000, which was around eight times more than in 1998.
The amount of CFC-11 emission was highest in 1980, at about 70 million tonnes. It remained mostly stable from 1980 to 1983. Then it experienced a continuous decrease over the entire period, reaching less than 10 million tonnes in 2000. The production of CFC-12 was gradually increased from 30 million to about 40 million tonnes over the years. N2O, however, only appeared after 1990, then it increased dramatically from 0 to 30 million tonnes over 10 years, which might have contributed to the increase of the ozone hole after 1993.