| Date | Value | Change, % |
|---|---|---|
| 2017 | 1,777.0 | -27.42% |
| 2016 | 2,448.5 | 27.30% |
| 2015 | 1,923.4 | 12.55% |
| 2014 | 1,709.0 | -24.17% |
| 2013 | 2,253.8 | 11.71% |
| 2012 | 2,017.5 | 38.07% |
| 2011 | 1,461.3 | -26.55% |
| 2010 | 1,989.5 | 24.03% |
| 2009 | 1,604.1 | -27.00% |
| 2008 | 2,197.3 | 39.80% |
| 2007 | 1,571.8 | -28.77% |
| 2006 | 2,206.5 |