The diagram illustrate the size of the ozone hole over the Antarctica and the amount of three different type of gases that damaged the layer from 1880 to 2000.
Overall, the size of ozone hole grew larger over the entire period. the production of CFC-12 and N2O increased but the average release of CFC-11 decline.
The size of the ozone hole increased from around 500,000km to 2,000,00o km 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 time more then 1998.
The amount of CFC-11 emission was highest in 1980, at about 70 million tones. It remained mostly stable from 1980 to 1983. Then experienced a continuous decrease over the entire period, less then 10 million tones in 2000. The production of CFC-12 was gradually increased 30 million to about 40 million tones over the year. N2O, However, only appeared after 1990 then it increased dramatically from 0 to 30 million tonos over 10 years, which might have contributed to the increase of the ozone hole after 1993.
