['Air Programs']
['Ozone Depleting Substances', 'Chlorofluorocarbons', 'Ozone Layer Protection']
10/23/2023
Date | Carbon tetrachloride (percent) | Methyl chloroform (percent) | Other class substances (percent) |
1994 | 70 | 85 | 65 |
1995 | 15 | 70 | 50 |
1996 | 15 | 50 | 40 |
1997 | 15 | 50 | 15 |
1998 | 15 | 50 | 15 |
1999 | 15 | 50 | 15 |
2000 | 20 | ||
2001 | 20 |