| 1958 | 3.5 |
| 1978 | 4 |
| 2014 | 3.89 |
| 1940 | 3.85 |
| 2011 | 4.14 |
| 1952 | 4.49 |
| 1920 | 3.81 |
| 1996 | 3.87 |
| 1970 | 4.05 |
| 1963 | 4.1 |
| 2000 | 3.72 |
| 2011 | 3.79 |
| 2004 | 3.76 |
| 1990 | 4.12 |
| 1969 | 4.12 |
| 2013 | 3.78 |
| 1910 | 3.46 |
| 2014 | 4.1 |
| 1847 | 4 |
| 1814 | 3.64 |
| 1878 | 3.29 |
| 1997 | 4.07 |
| 1980 | 4.47 |
| 1666 | 3.58 |
| 2005 | 4.28 |
| 1922 | 3.94 |
| 2003 | 4 |
| 1988 | 3.98 |
| 1916 | 4.08 |
| 1971 | 3.1 |
| 14 | 4.22 |
| 1847 | 3.51 |
| 2008 | 3.9 |
| 1967 | 4.09 |
| 1881 | 3.7 |
| 1987 | 2.86 |
| 2005 | 4 |
| 1964 | 3.6 |
| 1975 | 3.65 |
| 1997 | 4.4 |
| 2015 | 3.72 |
| 2012 | 3.82 |
| 2010 | 2 |
| 2010 | 3.97 |
| 1970 | 4.04 |
| 2002 | 4.01 |
| 1867 | 4.04 |
| 1977 | 3.83 |
| 2013 | 4.33 |
| 1992 | 0 |
| 1966 | 3.79 |
| 1990 | 2 |
| 2007 | 5 |
| 1899 | 0 |
| 1971 | 3.7 |
| 1893 | 4.2 |
| 1979 | 4.46 |
| 1957 | 3.9 |
| 1969 | 3.8 |
| 1831 | 3.82 |
| 1994 | 4.27 |
| 2013 | 3.91 |