
| 2024 | 22.35 | 37.49 | 25.84 | 59.6% |
| 2023 | 21.6 | 36.79 | 25.58 | 58.7% |
| 2022 | 19.57 | 33.22 | 23.3 | 58.9% |
| 2021 | 17.62 | 30.95 | 21.88 | 56.9% |
| 2020 | 16.53 | 30.35 | 21.64 | 54.5% |
| 2019 | 16.94 | 30.35 | 21.85 | 55.8% |
| 2018 | 16.51 | 30.65 | 22.3 | 53.9% |
| 2017 | 15.69 | 28.72 | 21.12 | 54.6% |
| 2016 | 15.35 | 28.09 | 20.9 | 54.6% |
| 2015 | 14.57 | 27.07 | 20.38 | 53.8% |
| 2014 | 14.14 | 25.62 | 19.53 | 55.2% |
| 2013 | 13.65 | 23.95 | 18.48 | 57% |
| 2012 | 13.56 | 23.41 | 18.31 | 57.9% |
| 2011 | 13.5 | 22.16 | 17.57 | 60.9% |
| 2010 | 13.25 | 21.41 | 17.22 | 61.9% |
| 2009 | 12.13 | 20 | 16.32 | 60.6% |
| 2008 | 11.67 | 18.29 | 15.14 | 63.8% |
| 2007 | 11.42 | 17.22 | 14.46 | 66.3% |
| 2006 | 10.88 | 15.93 | 13.58 | 68.3% |
| 2005 | 10.34 | 14.73 | 12.75 | 70.2% |
| 2004 | 9.86 | 14.01 | 12.34 | 70.4% |
| 2003 | 9.38 | 12.93 | 11.58 | 72.5% |
| 2002 | 8.96 | 12.56 | 11.44 | 71.3% |
| 2001 | 8.43 | 11.9 | 11.04 | 70.9% |
| 2000 | 8.15 | 11.69 | 11.05 | 69.7% |
| 1999 | 7.99 | 10.86 | 10.46 | 73.6% |
| 1998 | 7.95 | 10.17 | 9.98 | 78.2% |
| 1997 | 7.88 | 10.09 | 10.1 | 78.1% |
| 1996 | 7.57 | 9.6 | 9.79 | 78.9% |
| 1995 | 7.39 | 9.15 | 9.52 | 80.8% |
| 1994 | 6.94 | 8.53 | 9.06 | 81.3% |
| 1993 | 6.32 | 8.01 | 8.69 | 78.9% |
| 1992 | 6.25 | 7.7 | 8.53 | 81.2% |
| 1991 | 6.2 | 7.28 | 8.24 | 85.2% |
| 1990 | 5.9 | 6.92 | 8.01 | 85.3% |
| 1989 | 5.54 | 6.51 | 7.7 | 85.1% |
| 1988 | 5.35 | 6.19 | 7.49 | 86.4% |
| 1987 | 4.86 | 5.63 | 6.96 | 86.4% |
| 1986 | 4.66 | 5.3 | 6.71 | 87.8% |
| 1985 | 4.26 | 4.9 | 6.34 | 87% |
| 1984 | 4.05 | 4.62 | 6.12 | 87.7% |
| 1983 | 2.62 | 4.24 | 5.76 | 61.7% |
| 1982 | 2.47 | 4.02 | 5.58 | 61.4% |
| 1981 | 2.32 | 3.86 | 5.48 | 60.2% |
| 1980 | 2.12 | 3.43 | 4.99 | 62% |