
| 2024 | 2.69 | 0.65 | 63.16 | 411.4% |
| 2023 | 2.66 | 0.75 | 72.65 | 354.3% |
| 2022 | 2.7 | 0.72 | 70.18 | 374.1% |
| 2021 | 2.69 | 0.68 | 66.39 | 396.3% |
| 2020 | 2.41 | 0.61 | 59.85 | 395.5% |
| 2019 | 2.51 | 0.62 | 61.67 | 402.3% |
| 2018 | 2.37 | 0.6 | 59.48 | 396.3% |
| 2017 | 2.33 | 0.6 | 59.74 | 391.1% |
| 2016 | 2.45 | 0.6 | 60.45 | 410.6% |
| 2015 | 2.49 | 0.61 | 62.32 | 410.4% |
| 2014 | 2.47 | 0.58 | 59.84 | 428.8% |
| 2013 | 2.49 | 0.56 | 58.69 | 447% |
| 2012 | 2.59 | 0.59 | 63.17 | 436.7% |
| 2011 | 2.69 | 0.54 | 58.21 | 498.9% |
| 2010 | 2.81 | 0.57 | 61.77 | 497.7% |
| 2009 | 2.74 | 0.53 | 58.5 | 516.9% |
| 2008 | 2.45 | 0.57 | 63.19 | 433% |
| 2007 | 2.24 | 0.53 | 59.56 | 425.2% |
| 2006 | 1.65 | 0.64 | 73.54 | 258.2% |
| 2005 | 1.19 | 0.63 | 73.11 | 188.8% |
| 2004 | 0.86 | 0.61 | 71.62 | 141.9% |
| 2003 | 0.86 | 0.55 | 65.58 | 156.8% |
| 2002 | 0.86 | 0.52 | 62.24 | 165.2% |
| 2001 | 0.86 | 0.44 | 53.11 | 196.6% |
| 2000 | 0.82 | 0.5 | 60.8 | 165.2% |
| 1999 | 0.82 | 0.55 | 68.33 | 148.3% |
| 1998 | 0.71 | 0.53 | 66.46 | 133.4% |
| 1997 | 0.62 | 0.63 | 78.98 | 98.5% |
| 1996 | 0.65 | 0.63 | 80.79 | 102% |
| 1995 | 0.65 | 0.72 | 92.94 | 90.2% |
| 1994 | 0.64 | 0.75 | 98.15 | 85.1% |
| 1993 | 0.72 | 0.83 | 110.3 | 87.2% |
| 1992 | 0.77 | 0.98 | 132.2 | 78.3% |