| 1847 | 3.7 |
| 2008 | 3.88 |
| 181 | 3.86 |
| 1851 | 3.62 |
| 1939 | 4.24 |
| 2003 | 3.89 |
| 1930 | 3.89 |
| -800 | 3.79 |
| 199 | 3.82 |
| 1976 | 3.64 |
| 1920 | 3.74 |
| 1996 | 3.97 |
| 2014 | 3.51 |
| 1980 | 4.54 |
| 1988 | 4.2 |
| 1960 | 4.15 |
| 1985 | 4.09 |
| 1954 | 4.39 |
| 2006 | 3.75 |
| 1993 | 4.29 |
| 1811 | 4.18 |
| 1897 | 3.85 |
| 1972 | 4.09 |
| 1949 | 4.2 |
| 2014 | 4.09 |
| 2001 | 4.03 |
| 1937 | 4.3 |
| 2005 | 4.07 |
| 1944 | 4.05 |
| 19 | 4.27 |
| 1945 | 4.06 |
| 1980 | 4.06 |
| 2011 | 3.93 |
| 20 | 3.96 |
| 2000 | 4.33 |
| 1996 | 4.39 |
| 1776 | 4.12 |
| 1974 | 3.72 |