
| 2024 | 3.35 | 1.85 | 247 | 180.8% |
| 2023 | 3.59 | 1.82 | 247.1 | 197.4% |
| 2022 | 3.68 | 1.79 | 248.2 | 205% |
| 2021 | 3.46 | 1.78 | 251.3 | 194.3% |
| 2020 | 3.4 | 1.79 | 256.8 | 190.5% |
| 2019 | 3.6 | 1.75 | 257.6 | 205.2% |
| 2018 | 3.56 | 1.71 | 256.5 | 208.7% |
| 2017 | 3.42 | 1.74 | 267.1 | 196.9% |
| 2016 | 3.36 | 1.75 | 275.9 | 191.7% |
| 2015 | 3.53 | 1.76 | 282.9 | 201% |
| 2014 | 3.36 | 1.44 | 237.1 | 232.9% |
| 2013 | 3.19 | 1.41 | 237.1 | 226.8% |
| 2012 | 2.95 | 1.37 | 236.3 | 215.2% |
| 2011 | 2.72 | 1.19 | 210 | 228% |
| 2010 | 1.98 | 1.03 | 184.6 | 192.9% |
| 2009 | 1.69 | 0.88 | 160.6 | 193.1% |
| 2008 | 2.76 | 0.54 | 100.2 | 515.6% |
| 2007 | 2.79 | 0.66 | 125.1 | 425.4% |
| 2006 | 2.56 | 0.69 | 133.1 | 373.7% |
| 2005 | 2.77 | 0.88 | 174.9 | 313.3% |
| 2004 | 2.62 | 0.83 | 168.3 | 314.6% |
| 2003 | 2.64 | 0.8 | 163.5 | 332.5% |
| 2002 | 2.37 | 0.63 | 132.5 | 375.5% |
| 2001 | 2.15 | 0.54 | 115 | 399.9% |
| 2000 | 2.05 | 0.46 | 99.67 | 448.9% |
| 1999 | 1.15 | 0.32 | 70.72 | 363% |
| 1998 | 0.8 | 0.28 | 63.46 | 286.9% |
| 1997 | 1.19 | 0.3 | 69.88 | 391.8% |
| 1996 | 1.55 | 0.3 | 69.28 | 525.7% |
| 1995 | 1.35 | 0.3 | 71.05 | 454.8% |
| 1994 | 1.47 | 0.28 | 67.3 | 530.6% |
| 1993 | 2.55 | 0.28 | 70.09 | 904% |
| 1992 | 2.32 | 0.3 | 75.78 | 775.4% |