
| 2024 | 0.05 | 0.08 | 33.48 | 65.1% |
| 2023 | 0.05 | 0.08 | 32.08 | 62.5% |
| 2022 | 0.06 | 0.1 | 40.95 | 58.9% |
| 2021 | 0.04 | 0.08 | 32.96 | 56% |
| 2020 | 0.04 | 0.08 | 31.71 | 55.9% |
| 2019 | 0.05 | 0.08 | 33.38 | 60.6% |
| 2018 | 0.05 | 0.08 | 34.8 | 60.5% |
| 2017 | 0.05 | 0.08 | 35.6 | 61.5% |
| 2016 | 0.04 | 0.09 | 39.4 | 47.6% |
| 2015 | 0.05 | 0.08 | 36.31 | 58.2% |
| 2014 | 0.04 | 0.07 | 30.22 | 58.2% |
| 2013 | 0.03 | 0.07 | 30.53 | 51% |
| 2012 | 0.03 | 0.07 | 31.23 | 49.8% |
| 2011 | 0.02 | 0.07 | 32.14 | 26.3% |
| 2010 | 0.02 | 0.06 | 31.25 | 34.6% |
| 2009 | 0.02 | 0.06 | 30.9 | 26.7% |
| 2008 | 0.02 | 0.07 | 33.57 | 31% |
| 2007 | 0.02 | 0.06 | 32.95 | 29.3% |
| 2006 | 0.02 | 0.06 | 32.65 | 35% |
| 2005 | 0.02 | 0.06 | 31.27 | 38.1% |
| 2004 | 0.02 | 0.05 | 30.1 | 37.3% |
| 2003 | 0.02 | 0.05 | 30.57 | 33.8% |
| 2002 | 0.02 | 0.05 | 30.5 | 39.9% |
| 2001 | 0.02 | 0.05 | 29.94 | 39.7% |
| 2000 | 0.02 | 0.05 | 29.15 | 42.8% |
| 1999 | 0.02 | 0.04 | 22.87 | 42.6% |
| 1998 | 0.02 | 0.04 | 24.7 | 51.9% |
| 1997 | 0.02 | 0.04 | 23.55 | 46.7% |
| 1996 | 0.02 | 0.04 | 23.38 | 45.1% |
| 1995 | 0.02 | 0.04 | 25.29 | 53.5% |
| 1994 | 0.02 | 0.04 | 25.66 | 53.6% |
| 1993 | 0.02 | 0.04 | 26.5 | 52.7% |
| 1992 | 0.02 | 0.04 | 28.1 | 51.7% |
| 1991 | 0.02 | 0.03 | 23.83 | 54.6% |
| 1990 | 0.02 | 0.03 | 23.39 | 57.9% |
| 1989 | 0.01 | 0.03 | 21.77 | 53.4% |
| 1988 | 0.01 | 0.02 | 19.81 | 55.4% |
| 1987 | 0.01 | 0.02 | 17.63 | 51.3% |
| 1986 | 0.01 | 0.02 | 17.28 | 54.4% |
| 1985 | 0.0097 | 0.02 | 16.82 | 51.6% |
| 1984 | 0.0088 | 0.01 | 13.33 | 60.6% |
| 1983 | 0.0088 | 0.01 | 13.82 | 60.8% |
| 1982 | 0.0092 | 0.01 | 14.29 | 64.1% |
| 1981 | 0.0085 | 0.02 | 15.94 | 54.9% |
| 1980 | 0.0083 | 0.01 | 15.73 | 56% |