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 | 31.9 | -43.96% |
| 2011 | 56.9 | 7.38% |
| 2010 | 53.0 | -36.60% |
| 2009 | 83.6 | -2.45% |
| 2008 | 85.7 | -24.89% |
| 2007 | 114.1 | -1.81% |
| 2006 | 116.2 | -23.10% |
| 2005 | 151.1 | -5.86% |
| 2004 | 160.5 | -4.69% |
| 2003 | 168.4 | -11.37% |
| 2002 | 190.0 | 20.56% |
| 2001 | 157.6 |
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