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 | 11.0 | -12.68% |
| 2011 | 12.5 | 60.77% |
| 2010 | 7.8 | -13.33% |
| 2009 | 9.0 | 21.62% |
| 2008 | 7.4 | -19.57% |
| 2007 | 9.2 | 1.10% |
| 2006 | 9.1 | -51.60% |
| 2005 | 18.8 | 28.77% |
| 2004 | 14.6 | |
| 2003 | 0.0 | -100.00% |
| 2002 | 6.6 | 0.00% |
| 2001 | 6.6 |
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