| YEAR | E/G |
| 2011 2022 |
1.65 1.65 |
| 1981 | 1.71 |
| 2012 | 1.85 |
| 1977 | 1.89 |
| 2023 | 1.92 |
| 2016 | 2.00 |
| 2013 | 2.06 |
| 1980 | 2.07 |
| 1978 | 2.12 |
| 2010 | 2.14 |
| 1970 | 2.17 |
| 1971 | 2.19 |
| 1985 | 2.25 |
| 2021 | 2.36 |
| 2004 | 2.38 |
| 2019 | 2.44 |
| 1986 | 2.47 |
| 1987 | 2.50 |
| 2015 | 2.61 |
| 2005 | 2.64 |
| 1989 | 2.79 |
| 2014 | 2.80 |
| 1982 | 2.85 |
| 2003 | 2.85 |
| 1984 | 3.00 |
| 1979 | 3.15 |
| 2018 | 3.17 |
| 1972 | 3.18 |
| 2006 | 3.24 |
| 2008 | 3.33 |
| 2007 | 3.42 |
| 1975 | 3.60 |
| 1976 | 3.68 |
| 1990 | 3.68 |
| 1974 | 3.71 |
| 1973 | 3.73 |
| 2017 | 3.86 |
| 1988 | 3.89 |
| 1983 | 4.33 |
| 2009 | 4.50 |