Ozone-depleting substances are any substance containing chlorine or bromine that destroys the stratospheric ozone layer. The stratospheric ozone absorbs most of the biologically damaging ultraviolet radiation.
| Data | Valor | Modificar, % |
|---|---|---|
| 1994 | 45,3 | 37,27% |
| 1993 | 33,0 | 52,07% |
| 1992 | 21,7 | 52,82% |
| 1991 | 14,2 | -25,26% |
| 1990 | 19,0 | -5,94% |
| 1989 | 20,2 |