| 2006 | 4.51% | −44.29% | 3.41% | −5.59% | 309.74% | 0.55% |
| 2007 | 4.22% | −2.59% | 28.14% | −3.14% | −38.58% | 10.50% |
| 2008 | 8.06% | 24.23% | 29.44% | −1.85% | −203.46% | −2.11% |
| 2009 | 5.40% | 15.40% | 47.29% | −8.22% | 168.76% | −10.57% |
| 2010 | 3.19% | −20.61% | −4.78% | −2.57% | −416.52% | −5.31% |
| 2011 | 5.35% | −15.31% | −1.93% | 8.87% | −152.37% | −9.25% |
| 2012 | 6.32% | 13.34% | −18.90% | 0.78% | −100.28% | −0.75% |
| 2013 | 15.18% | 30.16% | −23.79% | −14.24% | −161710.62% | 9.80% |
| 2014 | 20.72% | 38.94% | 2.76% | −25.81% | −50.54% | 9.96% |
| 2015 | 4.56% | −0.65% | 8.68% | −32.07% | 40.62% | 11.16% |
| 2016 | −20.60% | 24.26% | 8.75% | −6.68% | −5.00% | −2.74% |
| 2017 | 6.06% | −2.22% | −12.76% | −2.86% | −75.58% | 0.00% |