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 | 56.8 | -34.56% |
| 2011 | 86.8 | -37.82% |
| 2010 | 139.6 | 2.57% |
| 2009 | 136.1 | -20.96% |
| 2008 | 172.2 | -30.62% |
| 2007 | 248.2 | -12.79% |
| 2006 | 284.6 | -9.82% |
| 2005 | 315.6 | -7.39% |
| 2004 | 340.8 | -7.01% |
| 2003 | 366.5 | -11.15% |
| 2002 | 412.5 | -19.26% |
| 2001 | 510.9 |
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