
| 2024 | 12.01 | 10.69 | 50.41 | 112.4% |
| 2023 | 11.82 | 10.32 | 48.88 | 114.6% |
| 2022 | 10.83 | 10.18 | 48.42 | 106.4% |
| 2021 | 10.32 | 10.08 | 48.09 | 102.4% |
| 2020 | 10.56 | 9.31 | 44.61 | 113.4% |
| 2019 | 10.31 | 9.85 | 47.46 | 104.7% |
| 2018 | 9.67 | 9.98 | 48.4 | 97% |
| 2017 | 9.57 | 10.15 | 49.56 | 94.4% |
| 2016 | 9.22 | 10 | 49.19 | 92.2% |
| 2015 | 8.94 | 10.34 | 51.27 | 86.5% |
| 2014 | 8.5 | 10.49 | 52.44 | 81% |
| 2013 | 7.9 | 10.18 | 51.27 | 77.6% |
| 2012 | 7.82 | 9.68 | 49.16 | 80.8% |
| 2011 | 7.79 | 9.22 | 47.2 | 84.5% |
| 2010 | 7.58 | 8.88 | 45.86 | 85.3% |
| 2009 | 7.04 | 7.96 | 41.43 | 88.5% |
| 2008 | 6.79 | 8.17 | 42.94 | 83.1% |
| 2007 | 6.4 | 7.74 | 41.05 | 82.7% |
| 2006 | 6.14 | 7.35 | 39.39 | 83.5% |
| 2005 | 5.84 | 7 | 37.91 | 83.5% |
| 2004 | 5.41 | 6.85 | 37.49 | 79% |
| 2003 | 5.34 | 6.55 | 36.27 | 81.4% |
| 2002 | 5.09 | 6.54 | 36.65 | 77.7% |
| 2001 | 4.6 | 6.49 | 36.8 | 70.8% |
| 2000 | 4.51 | 6.44 | 37.01 | 70% |
| 1999 | 4.14 | 6.08 | 35.39 | 68.1% |
| 1998 | 3.84 | 5.88 | 34.77 | 65.3% |
| 1997 | 3.53 | 5.72 | 34.31 | 61.7% |
| 1996 | 3.29 | 5.36 | 32.64 | 61.3% |
| 1995 | 2.99 | 5.03 | 31.07 | 59.6% |
| 1994 | 2.86 | 4.7 | 29.49 | 61% |
| 1993 | 2.76 | 4.43 | 28.25 | 62.2% |
| 1992 | 2.71 | 4.28 | 27.76 | 63.3% |
| 1991 | 2.68 | 4.15 | 27.36 | 64.6% |
| 1990 | 2.61 | 4.43 | 29.68 | 58.9% |
| 1989 | 2.57 | 3.79 | 25.89 | 67.7% |
| 1988 | 2.43 | 3.71 | 25.78 | 65.6% |
| 1987 | 2.41 | 3.6 | 25.5 | 67.1% |
| 1986 | 2.37 | 3.51 | 25.38 | 67.5% |
| 1985 | 2.36 | 3.19 | 23.55 | 74% |
| 1984 | 2.09 | 3.01 | 22.66 | 69.7% |
| 1983 | 0.89 | 2.81 | 21.62 | 31.9% |
| 1982 | 0.78 | 2.88 | 22.69 | 27.2% |
| 1981 | 0.7 | 2.88 | 23.18 | 24.5% |
| 1980 | 0.68 | 3 | 24.75 | 22.7% |