| 2015 | 3.63 |
| 2011 | 3.95 |
| 2012 | 3.96 |
| 2013 | 3.89 |
| 2001 | 3.91 |
| 2011 | 3.75 |
| 1984 | 3.68 |
| 2005 | 3.83 |
| 1990 | 3.92 |
| 2010 | 3.84 |
| 1999 | 3.95 |
| 2015 | 4.16 |
| 21 | 4.16 |
| 1853 | 4.14 |
| 2012 | 4.37 |
| 2010 | 4.61 |
| 2016 | 3.57 |
| 2017 | 3.85 |
| 2013 | 4.01 |
| 2009 | 3.73 |
| 2014 | 4.1 |
| 2008 | 4.02 |
| 2014 | 4.22 |
| 2013 | 3.54 |
| 2016 | 4.22 |
| 2013 | 4.07 |
| 2016 | 3.6 |
| 2012 | 4.21 |
| 2013 | 4 |
| 2015 | 3.88 |
| 2013 | 3.4 |
| 2012 | 3.85 |
| 2016 | 4 |
| 2016 | 3.25 |
| 2006 | 3.88 |
| 2011 | 4.36 |
| 2008 | 3 |
| 2010 | 3.2 |
| 2010 | 4.12 |
| 1999 | 4.05 |
| 2014 | 3.97 |