Structure
| Impact factor | SJR | SNIP | |
| 2016 | 4.945 | 3.845 | 1.070 |
| 2015 | 5.237 | 4.770 | 1.260 |
| 2014 | 5.618 | 4.550 | 1.280 |
| 2013 | 6.794 | 5.088 | 1.410 |
| 2012 | 5.994 | 4.323 | 1.480 |
| 2011 | 6.347 | 4.868 | 1.590 |
| 2010 | 6.337 | 4.625 | 1.470 |
| 2009 | 5.904 | 4.750 | 1.470 |
| 2008 | 5.397 | 4.199 | 1.380 |
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