
| 2024 | 1.66 | 2.29 | 60.47 | 72.7% |
| 2023 | 1.67 | 2.24 | 59.32 | 74.5% |
| 2022 | 1.74 | 2.34 | 57.08 | 74.4% |
| 2021 | 2.34 | 3.44 | 77.6 | 68.1% |
| 2020 | 2.22 | 3.35 | 74.96 | 66.4% |
| 2019 | 2.29 | 3.53 | 78.44 | 64.9% |
| 2018 | 2.33 | 3.68 | 81.44 | 63.2% |
| 2017 | 2.26 | 3.63 | 79.86 | 62.4% |
| 2016 | 2.39 | 3.72 | 81.64 | 64.2% |
| 2015 | 2.51 | 3.81 | 83.21 | 65.9% |
| 2014 | 2.86 | 4.33 | 94.08 | 66.1% |
| 2013 | 3.32 | 4.82 | 104.4 | 69% |
| 2012 | 3.4 | 5.11 | 110.5 | 66.6% |
| 2011 | 3.33 | 5.59 | 120.6 | 59.6% |
| 2010 | 3.21 | 5.08 | 109.3 | 63.2% |
| 2009 | 3.22 | 4.61 | 98.8 | 69.9% |
| 2008 | 3.41 | 6.24 | 133.3 | 54.6% |
| 2007 | 3.43 | 6.38 | 135.6 | 53.8% |
| 2006 | 3.41 | 6.06 | 128.2 | 56.3% |
| 2005 | 3.35 | 5.83 | 122.5 | 57.5% |
| 2004 | 3.31 | 5.83 | 121.6 | 56.7% |
| 2003 | 3.35 | 6.43 | 133 | 52.1% |
| 2002 | 3.2 | 5.95 | 122.3 | 53.8% |
| 2001 | 3.18 | 5.75 | 117.2 | 55.3% |
| 2000 | 3.18 | 5.89 | 118.8 | 54.1% |
| 1999 | 3.16 | 6.05 | 121 | 52.3% |
| 1998 | 3.13 | 5.85 | 116.1 | 53.6% |
| 1997 | 3.15 | 6.1 | 120.2 | 51.6% |
| 1996 | 3.12 | 6.25 | 121.9 | 49.9% |
| 1995 | 3.48 | 6.91 | 133.7 | 50.3% |
| 1994 | 3.74 | 7.39 | 142 | 50.6% |
| 1993 | 4.3 | 8.73 | 166.7 | 49.3% |
| 1992 | 4.79 | 9.12 | 174.3 | 52.6% |