
| 2024 | 9.42 | 1.15 | 206.7 | 817.3% |
| 2023 | 9.15 | 1.17 | 212.1 | 781.2% |
| 2022 | 9.13 | 1.15 | 211.1 | 792.7% |
| 2021 | 9.04 | 1.19 | 219.8 | 760.9% |
| 2020 | 8.87 | 1.18 | 218.5 | 755% |
| 2019 | 8.35 | 1.22 | 227.2 | 687.5% |
| 2018 | 8.85 | 1.23 | 232.3 | 717.2% |
| 2017 | 9.2 | 1.23 | 233.2 | 747.9% |
| 2016 | 8.8 | 1.13 | 216.1 | 777.3% |
| 2015 | 8.71 | 1.13 | 217.8 | 770.4% |
| 2014 | 8.29 | 1.13 | 220.8 | 730.7% |
| 2013 | 8.19 | 1.12 | 221.3 | 728.3% |
| 2012 | 8.61 | 1.09 | 216.5 | 792.4% |
| 2011 | 8.32 | 1.07 | 216.3 | 776.4% |
| 2010 | 8.72 | 1.14 | 232.9 | 765.7% |
| 2009 | 9.08 | 1.12 | 231.9 | 811.3% |
| 2008 | 9.23 | 1.05 | 219.2 | 883.3% |
| 2007 | 9.05 | 1.11 | 234.8 | 818.4% |
| 2006 | 9.34 | 1.03 | 220 | 911.1% |
| 2005 | 9.75 | 1.1 | 237.8 | 887.4% |
| 2004 | 10.06 | 1.19 | 258.4 | 848.2% |
| 2003 | 9.9 | 1.12 | 244.7 | 886.8% |
| 2002 | 9.8 | 1.08 | 237.6 | 908.9% |
| 2001 | 9.45 | 1.07 | 238.1 | 879.6% |
| 2000 | 9.32 | 1.03 | 229.7 | 903.2% |
| 1999 | 8.68 | 1.07 | 238.7 | 814.7% |
| 1998 | 8.52 | 1.03 | 233.4 | 823.8% |
| 1997 | 8.81 | 1.01 | 229.4 | 871.8% |
| 1996 | 8.53 | 0.98 | 224.1 | 868.5% |
| 1995 | 7.5 | 0.96 | 220.8 | 779.2% |
| 1994 | 7 | 0.92 | 212.7 | 758.5% |
| 1993 | 6.31 | 0.9 | 209 | 699.7% |
| 1992 | 6.07 | 0.92 | 215 | 659.1% |
| 1991 | 5.41 | 0.86 | 202.1 | 627.7% |
| 1990 | 4.96 | 0.88 | 207.6 | 563.7% |
| 1989 | 4.76 | 0.85 | 200.7 | 561.2% |
| 1988 | 3.93 | 0.86 | 203.3 | 459.6% |
| 1987 | 3.61 | 0.86 | 204.4 | 422.3% |
| 1986 | 3.23 | 0.87 | 209.7 | 370% |
| 1985 | 3.06 | 0.83 | 201 | 366.3% |
| 1984 | 2.94 | 0.79 | 192 | 369.9% |
| 1983 | 1.36 | 0.74 | 180.3 | 182.5% |
| 1982 | 1.3 | 0.72 | 175.7 | 179.8% |
| 1981 | 1.34 | 0.76 | 185.3 | 176.6% |
| 1980 | 1.29 | 0.78 | 191.6 | 165.4% |