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 | 76,0 | -28,16 % |
| 2012 | 105,8 | -2,96 % |
| 2011 | 109,0 | 9,23 % |
| 2010 | 99,8 | 32,71 % |
| 2009 | 75,2 | -17,99 % |
| 2008 | 91,7 | 16,37 % |
| 2007 | 78,8 | -1,01 % |
| 2006 | 79,6 | 8,01 % |
| 2005 | 73,7 | 4,99 % |
| 2004 | 70,2 | 85,22 % |
| 2003 | 37,9 | -27,95 % |
| 2002 | 52,6 |