
| 2024 | 1.14 | 0.67 | 36.84 | 170.9% |
| 2023 | 1.15 | 0.68 | 37.66 | 169.9% |
| 2022 | 1.16 | 0.65 | 36.34 | 179% |
| 2021 | 1.15 | 0.59 | 33.12 | 195.7% |
| 2020 | 1.16 | 0.48 | 27.55 | 240% |
| 2019 | 1.27 | 0.58 | 33.28 | 220.6% |
| 2018 | 1.23 | 0.6 | 35.46 | 203.3% |
| 2017 | 1.26 | 0.58 | 34.53 | 218% |
| 2016 | 1.29 | 0.59 | 35.82 | 218.1% |
| 2015 | 1.26 | 0.61 | 37.53 | 206.8% |
| 2014 | 1.29 | 0.64 | 39.78 | 201.6% |
| 2013 | 1.22 | 0.58 | 37 | 207.9% |
| 2012 | 1.17 | 0.56 | 36.28 | 207.5% |
| 2011 | 1.14 | 0.55 | 35.57 | 209.9% |
| 2010 | 1.11 | 0.54 | 35.88 | 205.2% |
| 2009 | 1.11 | 0.52 | 34.76 | 215.3% |
| 2008 | 1.16 | 0.48 | 33.23 | 239.6% |
| 2007 | 1.15 | 0.47 | 32.62 | 245.9% |
| 2006 | 1.21 | 0.45 | 32.14 | 268.2% |
| 2005 | 1.2 | 0.43 | 31.24 | 278.3% |
| 2004 | 1.19 | 0.4 | 29.52 | 297% |
| 2003 | 0.96 | 0.37 | 27.4 | 261.4% |
| 2002 | 0.89 | 0.35 | 26.6 | 254.4% |
| 2001 | 0.97 | 0.34 | 26.65 | 283.4% |
| 2000 | 0.92 | 0.32 | 25.06 | 288% |
| 1999 | 0.85 | 0.29 | 23.1 | 294.3% |
| 1998 | 0.85 | 0.31 | 25.05 | 277.3% |
| 1997 | 0.88 | 0.3 | 24.78 | 295% |
| 1996 | 0.86 | 0.29 | 24.47 | 298.8% |
| 1995 | 0.86 | 0.27 | 23.44 | 316.6% |
| 1994 | 0.85 | 0.27 | 23.54 | 318.8% |
| 1993 | 0.77 | 0.25 | 22.19 | 310.3% |
| 1992 | 0.72 | 0.26 | 23.99 | 276.1% |
| 1991 | 0.69 | 0.23 | 21.55 | 298.2% |
| 1990 | 0.66 | 0.22 | 20.84 | 301.8% |
| 1989 | 0.64 | 0.2 | 19.78 | 314.9% |
| 1988 | 0.7 | 0.21 | 20.88 | 333.1% |
| 1987 | 0.4 | 0.2 | 20.69 | 196.9% |
| 1986 | 0.66 | 0.21 | 21.66 | 320% |
| 1985 | 0.63 | 0.19 | 20.86 | 326.4% |
| 1984 | 0.58 | 0.19 | 20.56 | 310.7% |
| 1983 | 0.0097 | 0.18 | 20.8 | 5.3% |
| 1982 | 0.0056 | 0.2 | 23.26 | 2.8% |
| 1981 | 0.0051 | 0.19 | 22.13 | 2.8% |
| 1980 | 0.0069 | 0.18 | 21.99 | 3.8% |