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 | 21.4 | -76.46% |
| 2011 | 90.8 | -17.50% |
| 2010 | 110.0 | 74.60% |
| 2009 | 63.0 | 0.32% |
| 2008 | 62.8 | 3.12% |
| 2007 | 60.9 | 1.33% |
| 2006 | 60.1 | 50.25% |
| 2005 | 40.0 | 16.62% |
| 2004 | 34.3 | 2.08% |
| 2003 | 33.6 | 3.38% |
| 2002 | 32.5 | -32.85% |
| 2001 | 48.4 |
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