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 | 58.9 | 7.11% |
| 2011 | 55.0 | 0.55% |
| 2010 | 54.7 | 8.10% |
| 2009 | 50.6 | 9.52% |
| 2008 | 46.2 | 5.96% |
| 2007 | 43.6 | 3.56% |
| 2006 | 42.1 | 4.99% |
| 2005 | 40.1 | 7.80% |
| 2004 | 37.2 | |
| 2003 | 0.0 | |
| 2002 | 0.0 | |
| 2001 | 0.0 |
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