| Date | Value | Change, % |
|---|---|---|
| 2017 | 2,466.0 | 5.40% |
| 2016 | 2,339.7 | 5.42% |
| 2015 | 2,219.4 | -13.19% |
| 2014 | 2,556.5 | 3.54% |
| 2013 | 2,469.1 | -14.60% |
| 2012 | 2,891.2 | 29.17% |
| 2011 | 2,238.3 | -13.03% |
| 2010 | 2,573.7 | 10.43% |
| 2009 | 2,330.6 | -6.34% |
| 2008 | 2,488.3 | 8.27% |
| 2007 | 2,298.2 | 23.28% |
| 2006 | 1,864.2 |