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 | Value | Change, % |
|---|---|---|
| 2012 | 93.3 | 0.00% |
| 2011 | 93.3 | 7.35% |
| 2010 | 86.9 | 36.85% |
| 2009 | 63.5 | -15.33% |
| 2008 | 75.0 | -19.79% |
| 2007 | 93.5 | -3.91% |
| 2006 | 97.3 | 21.02% |
| 2005 | 80.4 | -4.63% |
| 2004 | 84.3 | 4.85% |
| 2003 | 80.4 | 211.63% |
| 2002 | 25.8 | 11.69% |
| 2001 | 23.1 |
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