
| 2024 | 0.13 | 0.27 | 3.94 | 47.9% |
| 2023 | 0.14 | 0.27 | 3.99 | 54.4% |
| 2022 | 0.14 | 0.26 | 3.98 | 55.9% |
| 2021 | 0.09 | 0.23 | 3.6 | 38.4% |
| 2020 | 0.08 | 0.2 | 3.21 | 39.4% |
| 2019 | 0.08 | 0.21 | 3.47 | 40% |
| 2018 | 0.07 | 0.19 | 3.35 | 39% |
| 2017 | 0.06 | 0.16 | 2.96 | 37.4% |
| 2016 | 0.07 | 0.18 | 3.4 | 40.9% |
| 2015 | 0.06 | 0.17 | 3.2 | 35.1% |
| 2014 | 0.04 | 0.16 | 3.14 | 25% |
| 2013 | 0.04 | 0.16 | 3.19 | 23.2% |
| 2012 | 0.03 | 0.15 | 3.13 | 22.5% |
| 2011 | 0.03 | 0.12 | 2.6 | 25.3% |
| 2010 | 0.04 | 0.11 | 2.53 | 36.7% |
| 2009 | 0.04 | 0.1 | 2.22 | 36.5% |
| 2008 | 0.03 | 0.1 | 2.3 | 31.3% |
| 2007 | 0.03 | 0.09 | 2.27 | 31.4% |
| 2006 | 0.02 | 0.09 | 2.29 | 26.6% |
| 2005 | 0.02 | 0.09 | 2.23 | 25.7% |
| 2004 | 0.01 | 0.08 | 2.02 | 17.4% |
| 2003 | 0.01 | 0.06 | 1.61 | 17.6% |
| 2002 | 0.01 | 0.06 | 1.6 | 20.3% |
| 2001 | 0.01 | 0.05 | 1.46 | 22.1% |
| 2000 | 0.0096 | 0.05 | 1.33 | 21.1% |
| 1999 | 0.0092 | 0.04 | 1.31 | 21.2% |
| 1998 | 0.0082 | 0.04 | 1.28 | 19.7% |
| 1997 | 0.0056 | 0.04 | 1.21 | 14.7% |
| 1996 | 0.0074 | 0.04 | 1.28 | 18.6% |
| 1995 | 0.0063 | 0.04 | 1.26 | 16.6% |
| 1994 | 0.0062 | 0.04 | 1.32 | 16% |
| 1993 | 0.0069 | 0.04 | 1.52 | 15.9% |
| 1992 | 0.0061 | 0.04 | 1.5 | 14.9% |
| 1991 | 0.0061 | 0.04 | 1.42 | 16.1% |
| 1990 | 0.0054 | 0.04 | 1.68 | 12.4% |
| 1989 | 0.005 | 0.04 | 1.55 | 12.5% |
| 1988 | 0.0042 | 0.04 | 1.61 | 10.6% |
| 1987 | 0.004 | 0.04 | 1.55 | 10.7% |
| 1986 | 0.0036 | 0.04 | 1.79 | 8.8% |
| 1985 | 0.0038 | 0.04 | 1.57 | 10.8% |
| 1984 | 0.0037 | 0.04 | 1.62 | 10.6% |
| 1983 | 0.0036 | 0.03 | 1.47 | 11.7% |
| 1982 | 0.0035 | 0.04 | 1.72 | 10% |
| 1981 | 0.0035 | 0.04 | 1.88 | 9.4% |
| 1980 | 0.0034 | 0.03 | 1.6 | 10.9% |