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 | 420.2 | 5.63% |
| 2011 | 397.8 | -9.42% |
| 2010 | 439.1 | 10.30% |
| 2009 | 398.1 | 6.02% |
| 2008 | 375.5 | 4.33% |
| 2007 | 359.9 | 25.71% |
| 2006 | 286.3 | 29.43% |
| 2005 | 221.2 | -12.50% |
| 2004 | 252.8 | 24.41% |
| 2003 | 203.2 | 21.90% |
| 2002 | 166.7 | 1.34% |
| 2001 | 164.5 |
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