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 | 93.8 | -30.67% |
| 2011 | 135.3 | -9.32% |
| 2010 | 149.2 | -10.77% |
| 2009 | 167.2 | -29.09% |
| 2008 | 235.8 | -18.01% |
| 2007 | 287.6 | -1.94% |
| 2006 | 293.3 | -17.84% |
| 2005 | 357.0 | -64.97% |
| 2004 | 1,019.0 | 18.79% |
| 2003 | 857.8 | -51.53% |
| 2002 | 1,769.7 | 3.42% |
| 2001 | 1,711.2 |
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