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 | 22,2 | -4,94 % |
| 2012 | 23,3 | -1,89 % |
| 2011 | 23,8 | -1,04 % |
| 2010 | 24,0 | 1,69 % |
| 2009 | 23,6 | 8,76 % |
| 2008 | 21,7 | 8,50 % |
| 2007 | 20,0 | 8,70 % |
| 2006 | 18,4 | 6 033,33 % |
| 2005 | 0,3 | 0,00 % |
| 2004 | 0,3 | -40,00 % |
| 2003 | 0,5 | 0,00 % |
| 2002 | 0,5 |