
| 2024 | 3.57 | 6.41 | 92.72 | 55.7% |
| 2023 | 3.78 | 6.44 | 93.79 | 58.6% |
| 2022 | 4.27 | 6.76 | 99.09 | 63.1% |
| 2021 | 4.17 | 6.87 | 101.5 | 60.7% |
| 2020 | 4.86 | 6.71 | 99.68 | 72.4% |
| 2019 | 5.02 | 7.61 | 113.5 | 66% |
| 2018 | 5.09 | 7.84 | 117.5 | 64.8% |
| 2017 | 4.94 | 7.88 | 118.8 | 62.7% |
| 2016 | 4.91 | 7.99 | 121.2 | 61.5% |
| 2015 | 4.85 | 8.04 | 123 | 60.4% |
| 2014 | 4.44 | 8.02 | 123.6 | 55.4% |
| 2013 | 4.46 | 8.51 | 132.2 | 52.4% |
| 2012 | 4.8 | 8.59 | 134.4 | 55.9% |
| 2011 | 5.39 | 8.48 | 133.5 | 63.6% |
| 2010 | 6.25 | 9.1 | 144.4 | 68.7% |
| 2009 | 6.49 | 8.73 | 139.6 | 74.3% |
| 2008 | 6.89 | 9.27 | 149.5 | 74.3% |
| 2007 | 7.3 | 9.39 | 152.7 | 77.7% |
| 2006 | 7.8 | 9.75 | 159.7 | 80% |
| 2005 | 8.58 | 9.86 | 162.7 | 87% |
| 2004 | 9.44 | 9.9 | 164.5 | 95.4% |
| 2003 | 10.39 | 9.87 | 165 | 105.2% |
| 2002 | 10.95 | 9.8 | 164.7 | 111.7% |
| 2001 | 11.09 | 9.94 | 167.7 | 111.5% |
| 2000 | 11.53 | 9.86 | 167 | 116.9% |
| 1999 | 11.92 | 9.86 | 167.5 | 120.9% |
| 1998 | 11.52 | 9.82 | 167.6 | 117.3% |
| 1997 | 11.34 | 9.79 | 167.5 | 115.9% |
| 1996 | 11.56 | 10.21 | 175.1 | 113.3% |
| 1995 | 11.05 | 9.67 | 166.3 | 114.2% |
| 1994 | 10.56 | 9.64 | 166.3 | 109.5% |
| 1993 | 9.66 | 9.63 | 166.4 | 100.3% |
| 1992 | 9.31 | 9.48 | 164.3 | 98.2% |
| 1991 | 9.33 | 9.56 | 166.1 | 97.6% |
| 1990 | 8.99 | 9.26 | 161.3 | 97.1% |
| 1989 | 9.03 | 9.11 | 159.3 | 99.1% |
| 1988 | 10.08 | 9.08 | 159.3 | 110.9% |
| 1987 | 10.41 | 9.02 | 158.5 | 115.5% |
| 1986 | 10.64 | 8.96 | 157.8 | 118.7% |
| 1985 | 10.21 | 8.7 | 153.7 | 117.3% |
| 1984 | 8.82 | 8.35 | 147.9 | 105.7% |
| 1983 | 5.07 | 8.46 | 150.1 | 60% |
| 1982 | 5.11 | 8.43 | 149.8 | 60.6% |
| 1981 | 5.06 | 8.53 | 151.4 | 59.4% |
| 1980 | 5.12 | 8.97 | 159.3 | 57.1% |