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 | 66.5 | -24.82% |
| 2011 | 88.4 | 14.09% |
| 2010 | 77.5 | 14.48% |
| 2009 | 67.7 | 5.45% |
| 2008 | 64.2 | 72.58% |
| 2007 | 37.2 | 79.71% |
| 2006 | 20.7 | 56.82% |
| 2005 | 13.2 | 45.05% |
| 2004 | 9.1 | |
| 2003 | 0.0 | -100.00% |
| 2002 | 7.3 | 25.86% |
| 2001 | 5.8 |
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