
| 2024 | 1.62 | 2.92 | 11.64 | 55.5% |
| 2023 | 1.66 | 3.09 | 12.48 | 53.8% |
| 2022 | 1.64 | 3.22 | 13.19 | 51.1% |
| 2021 | 1.51 | 3.24 | 13.55 | 46.6% |
| 2020 | 1.56 | 3.02 | 12.83 | 51.6% |
| 2019 | 1.52 | 2.97 | 12.85 | 51.2% |
| 2018 | 1.68 | 3.1 | 13.67 | 54.1% |
| 2017 | 1.66 | 3.2 | 14.32 | 51.9% |
| 2016 | 1.64 | 3.02 | 13.72 | 54.4% |
| 2015 | 1.66 | 2.76 | 12.71 | 60.1% |
| 2014 | 1.65 | 2.62 | 12.23 | 62.8% |
| 2013 | 1.61 | 2.5 | 11.83 | 64.5% |
| 2012 | 1.72 | 2.55 | 12.28 | 67.4% |
| 2011 | 1.55 | 2.39 | 11.74 | 65% |
| 2010 | 1.56 | 2.4 | 12.05 | 65% |
| 2009 | 1.51 | 2.34 | 12.03 | 64.8% |
| 2008 | 1.49 | 2.32 | 12.26 | 64.2% |
| 2007 | 1.52 | 2.33 | 12.64 | 65.3% |
| 2006 | 1.5 | 2.23 | 12.41 | 67.3% |
| 2005 | 1.35 | 1.96 | 11.15 | 68.8% |
| 2004 | 1.18 | 1.8 | 10.51 | 65.7% |
| 2003 | 1.09 | 1.65 | 9.85 | 66% |
| 2002 | 0.99 | 1.68 | 10.3 | 58.9% |
| 2001 | 0.99 | 1.68 | 10.56 | 59.1% |
| 2000 | 1.04 | 1.76 | 11.39 | 58.7% |
| 1999 | 0.97 | 1.65 | 10.94 | 59.1% |
| 1998 | 0.91 | 1.58 | 10.79 | 57.8% |
| 1997 | 0.91 | 1.54 | 10.81 | 58.9% |
| 1996 | 0.91 | 1.52 | 10.99 | 59.6% |
| 1995 | 0.85 | 1.42 | 10.51 | 60.2% |
| 1994 | 0.85 | 1.37 | 10.47 | 61.7% |
| 1993 | 0.79 | 1.25 | 9.87 | 63.3% |
| 1992 | 0.77 | 1.16 | 9.38 | 66.9% |
| 1991 | 0.75 | 1.12 | 9.3 | 67.4% |
| 1990 | 0.69 | 1.05 | 9.07 | 65.2% |
| 1989 | 0.65 | 1.01 | 9 | 64.5% |
| 1988 | 0.61 | 0.96 | 8.79 | 64.1% |
| 1987 | 0.57 | 0.9 | 8.53 | 63.5% |
| 1986 | 0.54 | 0.83 | 8.19 | 64.5% |
| 1985 | 0.5 | 0.79 | 8 | 63.1% |
| 1984 | 0.46 | 0.72 | 7.6 | 64.3% |
| 1983 | 0.4 | 0.71 | 7.68 | 57% |
| 1982 | 0.41 | 0.71 | 7.97 | 58% |
| 1981 | 0.37 | 0.62 | 7.2 | 59.7% |
| 1980 | 0.34 | 0.56 | 6.84 | 59.9% |