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.
| Date | Valeur | Modifier , % |
|---|---|---|
| 2013 | 49,6 | -34,38 % |
| 2012 | 75,6 | 31,87 % |
| 2011 | 57,3 | -2,35 % |
| 2010 | 58,7 | 30,16 % |
| 2009 | 45,1 | 16,24 % |
| 2008 | 38,8 | 35,19 % |
| 2007 | 28,7 | 0,00 % |
| 2006 | 28,7 | 6,30 % |
| 2005 | 27,0 | 36,36 % |
| 2004 | 19,8 | -41,59 % |
| 2003 | 33,9 | -17,11 % |
| 2002 | 40,9 |