
| 2024 | 0.56 | 0.38 | 11.13 | 147.2% |
| 2023 | 0.5 | 0.36 | 10.78 | 136.8% |
| 2022 | 0.5 | 0.35 | 10.45 | 145.6% |
| 2021 | 0.52 | 0.35 | 10.82 | 149% |
| 2020 | 0.55 | 0.32 | 10.08 | 172.4% |
| 2019 | 0.51 | 0.27 | 8.73 | 188.3% |
| 2018 | 0.43 | 0.25 | 8.2 | 172.8% |
| 2017 | 0.38 | 0.25 | 8.39 | 150.9% |
| 2016 | 0.26 | 0.25 | 8.57 | 101.8% |
| 2015 | 0.27 | 0.25 | 8.58 | 108.9% |
| 2014 | 0.26 | 0.21 | 7.37 | 124.9% |
| 2013 | 0.24 | 0.2 | 7.43 | 118% |
| 2012 | 0.2 | 0.19 | 7.2 | 102.8% |
| 2011 | 0.19 | 0.19 | 7.2 | 102% |
| 2010 | 0.04 | 0.14 | 5.61 | 27.5% |
| 2009 | 0.04 | 0.14 | 5.56 | 26.3% |
| 2008 | 0.03 | 0.12 | 4.87 | 28.9% |
| 2007 | 0.03 | 0.11 | 4.63 | 23.4% |
| 2006 | 0.03 | 0.11 | 4.57 | 30.5% |
| 2005 | 0.03 | 0.11 | 4.84 | 29.6% |
| 2004 | 0.03 | 0.11 | 4.89 | 31% |
| 2003 | 0.03 | 0.09 | 4.41 | 30.3% |
| 2002 | 0.03 | 0.1 | 4.68 | 33.3% |
| 2001 | 0.04 | 0.1 | 4.84 | 38.6% |
| 2000 | 0.04 | 0.1 | 4.97 | 38.6% |
| 1999 | 0.03 | 0.08 | 4.2 | 40.6% |
| 1998 | 0.03 | 0.07 | 3.7 | 40.6% |
| 1997 | 0.04 | 0.08 | 4.12 | 50.9% |
| 1996 | 0.04 | 0.08 | 4.37 | 47.6% |
| 1995 | 0.03 | 0.07 | 4.31 | 44.8% |
| 1994 | 0.03 | 0.07 | 4.3 | 46% |
| 1993 | 0.02 | 0.07 | 4.13 | 31.1% |
| 1992 | 0.02 | 0.07 | 4.19 | 32.9% |
| 1991 | 0.02 | 0.06 | 3.89 | 33.8% |
| 1990 | 0.02 | 0.06 | 3.93 | 31.9% |
| 1989 | 0.02 | 0.07 | 4.43 | 26.6% |
| 1988 | 0.02 | 0.06 | 4.09 | 27.4% |
| 1987 | 0.02 | 0.05 | 3.68 | 30% |
| 1986 | 0.01 | 0.05 | 3.34 | 32.1% |
| 1985 | 0.01 | 0.04 | 2.8 | 26.8% |
| 1984 | 0.0061 | 0.04 | 2.87 | 16% |
| 1983 | 0.0087 | 0.04 | 2.83 | 23.6% |
| 1982 | 0.02 | 0.05 | 3.81 | 35% |
| 1981 | 0.02 | 0.05 | 3.71 | 40% |
| 1980 | 0.02 | 0.05 | 4.16 | 36.3% |