
| 2024 | 9.96 | 2.92 | 63.31 | 341.8% |
| 2023 | 9.78 | 2.91 | 64.66 | 335.7% |
| 2022 | 10.02 | 2.9 | 65.8 | 345.6% |
| 2021 | 9.17 | 2.64 | 61.25 | 347.4% |
| 2020 | 9.12 | 2.47 | 58.58 | 369.5% |
| 2019 | 10.56 | 2.74 | 66.63 | 384.7% |
| 2018 | 10.31 | 2.49 | 61.79 | 414.5% |
| 2017 | 9.96 | 2.58 | 65.51 | 386.4% |
| 2016 | 9.68 | 1.74 | 45.12 | 557.6% |
| 2015 | 8.79 | 1.41 | 37.44 | 624.8% |
| 2014 | 7.31 | 1.63 | 44.71 | 447.6% |
| 2013 | 6.61 | 1.69 | 47.88 | 391.5% |
| 2012 | 6.46 | 1.6 | 47.55 | 403.9% |
| 2011 | 5.7 | 1.38 | 42.92 | 412.7% |
| 2010 | 5.24 | 1.33 | 42.94 | 392.9% |
| 2009 | 5.15 | 1.29 | 43.05 | 398.1% |
| 2008 | 5.16 | 1.08 | 37.12 | 480.1% |
| 2007 | 4.55 | 0.95 | 33.42 | 479.9% |
| 2006 | 4.16 | 1.04 | 36.29 | 400.9% |
| 2005 | 3.96 | 1.06 | 37.31 | 374.1% |
| 2004 | 4.34 | 1.01 | 36.62 | 430.1% |
| 2003 | 2.87 | 0.82 | 30.43 | 352.2% |
| 2002 | 4.4 | 1.04 | 39.89 | 423.7% |
| 2001 | 5.14 | 1.02 | 40.42 | 505% |
| 2000 | 5.61 | 1 | 41.13 | 558.5% |
| 1999 | 5.5 | 1.07 | 45.13 | 515.5% |
| 1998 | 4.62 | 1.05 | 45.8 | 440.9% |
| 1997 | 2.57 | 1.03 | 46.64 | 248.9% |
| 1996 | 1.36 | 1.12 | 52.07 | 121.3% |
| 1995 | 1.3 | 1.12 | 53.93 | 115.3% |
| 1994 | 1.24 | 1.1 | 54.45 | 113.5% |
| 1993 | 1.12 | 0.96 | 49.9 | 116.9% |
| 1992 | 1.02 | 0.83 | 45.48 | 123.2% |
| 1991 | 0.67 | 0.6 | 33.6 | 112.9% |
| 1990 | 4.45 | 0.91 | 51.81 | 488.3% |
| 1989 | 6.26 | 0.82 | 47.26 | 763.1% |
| 1988 | 5.81 | 0.76 | 45.08 | 762.8% |
| 1987 | 4.63 | 0.63 | 38.32 | 732% |
| 1986 | 3.68 | 0.62 | 38.37 | 596.9% |
| 1985 | 3.08 | 0.57 | 36.24 | 542.2% |
| 1984 | 2.56 | 0.53 | 34.54 | 484.8% |
| 1983 | 0.02 | 0.55 | 36.81 | 3.8% |
| 1982 | 0.03 | 0.46 | 31.8 | 5.9% |
| 1981 | 0.03 | 0.48 | 34 | 5.5% |
| 1980 | 0.07 | 0.52 | 38.6 | 12.8% |