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 | 105.8 | -2.96% |
| 2011 | 109.0 | 9.23% |
| 2010 | 99.8 | 32.71% |
| 2009 | 75.2 | -17.99% |
| 2008 | 91.7 | 16.37% |
| 2007 | 78.8 | -1.01% |
| 2006 | 79.6 | 8.01% |
| 2005 | 73.7 | 4.99% |
| 2004 | 70.2 | 85.22% |
| 2003 | 37.9 | -27.95% |
| 2002 | 52.6 | 0.19% |
| 2001 | 52.5 |
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