| Date | Value | Change, % |
|---|---|---|
| 2017 | 2,202.6 | 5.44% |
| 2016 | 2,088.9 | 11.59% |
| 2015 | 1,871.9 | 8.41% |
| 2014 | 1,726.6 | 1.17% |
| 2013 | 1,706.7 | 1.00% |
| 2012 | 1,689.8 | 14.16% |
| 2011 | 1,480.2 | -23.76% |
| 2010 | 1,941.4 | 23.14% |
| 2009 | 1,576.6 | -31.88% |
| 2008 | 2,314.5 | 2.61% |
| 2007 | 2,255.5 | 31.77% |
| 2006 | 1,711.7 |