
| 2024 | 0.33 | 0.62 | 119.4 | 53.1% |
| 2023 | 0.36 | 0.65 | 125.7 | 55.4% |
| 2022 | 0.35 | 0.62 | 120.3 | 57% |
| 2021 | 0.37 | 0.63 | 124.1 | 57.8% |
| 2020 | 0.38 | 0.65 | 129 | 58.6% |
| 2019 | 0.4 | 0.73 | 145.5 | 54.9% |
| 2018 | 0.4 | 0.71 | 144.3 | 56.3% |
| 2017 | 0.41 | 0.72 | 149.6 | 57.6% |
| 2016 | 0.46 | 0.7 | 149.5 | 64.9% |
| 2015 | 0.48 | 0.69 | 149.4 | 69% |
| 2014 | 0.5 | 0.69 | 153.5 | 72.1% |
| 2013 | 0.48 | 0.66 | 149 | 72.9% |
| 2012 | 0.49 | 0.65 | 147.5 | 75.6% |
| 2011 | 0.49 | 0.64 | 145.4 | 77.5% |
| 2010 | 0.53 | 0.64 | 148.2 | 82.8% |
| 2009 | 0.5 | 0.63 | 146 | 79.1% |
| 2008 | 0.49 | 0.65 | 152.3 | 76.2% |
| 2007 | 0.47 | 0.64 | 151.5 | 73% |
| 2006 | 0.43 | 0.64 | 153 | 67.3% |
| 2005 | 0.42 | 0.64 | 153.8 | 65.3% |
| 2004 | 0.43 | 0.64 | 156.4 | 68.1% |
| 2003 | 0.45 | 0.63 | 157.8 | 70.4% |
| 2002 | 0.51 | 0.66 | 166.9 | 76.6% |
| 2001 | 0.5 | 0.65 | 167.6 | 76.7% |
| 2000 | 0.48 | 0.63 | 162.5 | 77.1% |
| 1999 | 0.49 | 0.62 | 160.4 | 79.2% |
| 1998 | 0.46 | 0.59 | 154.9 | 78.2% |
| 1997 | 0.52 | 0.61 | 161.5 | 84.5% |
| 1996 | 0.49 | 0.6 | 159.8 | 81.5% |
| 1995 | 0.44 | 0.58 | 157.9 | 76.4% |
| 1994 | 0.45 | 0.57 | 157.8 | 78% |
| 1993 | 0.44 | 0.55 | 152.9 | 81.1% |
| 1992 | 0.44 | 0.56 | 157.3 | 79.3% |
| 1991 | 0.43 | 0.53 | 152.6 | 81.4% |
| 1990 | 0.41 | 0.53 | 155.6 | 77.5% |
| 1989 | 0.41 | 0.5 | 150.7 | 81.1% |
| 1988 | 0.39 | 0.48 | 146.2 | 79.9% |
| 1987 | 0.35 | 0.45 | 137 | 77.7% |
| 1986 | 0.37 | 0.44 | 135.2 | 82.6% |
| 1985 | 0.33 | 0.41 | 125.3 | 79.6% |
| 1984 | 0.28 | 0.39 | 119.9 | 72.2% |
| 1983 | 0.22 | 0.36 | 113.1 | 59.3% |
| 1982 | 0.2 | 0.35 | 110.2 | 57% |
| 1981 | 0.17 | 0.33 | 104.2 | 51.8% |
| 1980 | 0.16 | 0.34 | 108.3 | 47.2% |