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 | 7.1 | -19.05% |
| 2011 | 8.8 | 66.42% |
| 2010 | 5.3 | -50.47% |
| 2009 | 10.7 | 55.07% |
| 2008 | 6.9 | -19.77% |
| 2007 | 8.6 | 13.16% |
| 2006 | 7.6 | -17.39% |
| 2005 | 9.2 | -25.20% |
| 2004 | 12.3 | 0.00% |
| 2003 | 12.3 | 73.24% |
| 2002 | 7.1 | 29.09% |
| 2001 | 5.5 |
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