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 | 75.6 | 31.87% |
| 2011 | 57.3 | -2.35% |
| 2010 | 58.7 | 30.16% |
| 2009 | 45.1 | 16.24% |
| 2008 | 38.8 | 35.19% |
| 2007 | 28.7 | 0.00% |
| 2006 | 28.7 | 6.30% |
| 2005 | 27.0 | 36.36% |
| 2004 | 19.8 | -41.59% |
| 2003 | 33.9 | -17.11% |
| 2002 | 40.9 | 16.19% |
| 2001 | 35.2 |
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