
| 2024 | 0.17 | 0.78 | 74.71 | 21.3% |
| 2023 | 0.15 | 0.81 | 77.2 | 18.3% |
| 2022 | 0.13 | 0.84 | 80.32 | 15.4% |
| 2021 | 0.14 | 0.8 | 77.42 | 17.5% |
| 2020 | 0.14 | 0.79 | 76.59 | 17.3% |
| 2019 | 0.13 | 0.92 | 88.48 | 13.9% |
| 2018 | 0.13 | 0.92 | 88.79 | 14.5% |
| 2017 | 0.11 | 0.96 | 92.65 | 11.5% |
| 2016 | 0.14 | 0.91 | 87.9 | 15.6% |
| 2015 | 0.12 | 0.91 | 88.09 | 12.7% |
| 2014 | 0.14 | 0.87 | 83.56 | 16% |
| 2013 | 0.13 | 0.88 | 84.37 | 15% |
| 2012 | 0.1 | 0.88 | 83.95 | 11% |
| 2011 | 0.12 | 0.93 | 88.4 | 12.6% |
| 2010 | 0.13 | 0.95 | 90.04 | 13.4% |
| 2009 | 0.09 | 0.96 | 90.96 | 9.1% |
| 2008 | 0.07 | 0.99 | 93.3 | 7.2% |
| 2007 | 0.08 | 1.01 | 96.2 | 7.6% |
| 2006 | 0.07 | 1 | 95.44 | 7.1% |
| 2005 | 0.04 | 1.06 | 101.3 | 4% |
| 2004 | 0.05 | 1.04 | 98.82 | 5.3% |
| 2003 | 0.07 | 1 | 95.97 | 7.2% |
| 2002 | 0.05 | 1.02 | 98.29 | 4.5% |
| 2001 | 0.07 | 0.98 | 94.83 | 6.6% |
| 2000 | 0.05 | 0.99 | 95.88 | 5.6% |
| 1999 | 0.04 | 0.97 | 94.62 | 3.9% |
| 1998 | 0.05 | 0.88 | 87.04 | 6.2% |
| 1997 | 0.06 | 0.82 | 80.66 | 6.8% |
| 1996 | 0.06 | 0.77 | 76.78 | 7.8% |
| 1995 | 0.04 | 0.78 | 77.99 | 4.9% |
| 1994 | 0.05 | 0.73 | 73.47 | 6.7% |
| 1993 | 0.04 | 0.71 | 71.07 | 6% |
| 1992 | 0.03 | 0.73 | 73.01 | 4.1% |
| 1991 | 0.04 | 0.68 | 68 | 6.6% |
| 1990 | 0.04 | 0.67 | 67.11 | 6.6% |
| 1989 | 0.03 | 0.65 | 65.01 | 4.8% |
| 1988 | 0.05 | 0.56 | 56.13 | 9.3% |
| 1987 | 0.04 | 0.52 | 51.81 | 8.2% |
| 1986 | 0.04 | 0.51 | 50.82 | 7.8% |
| 1985 | 0.05 | 0.46 | 45.81 | 10.1% |
| 1984 | 0.04 | 0.46 | 46.01 | 8.8% |
| 1983 | 0.03 | 0.45 | 45.69 | 7.7% |
| 1982 | 0.03 | 0.45 | 45.55 | 6.8% |
| 1981 | 0.02 | 0.35 | 35.15 | 6.9% |
| 1980 | 0.03 | 0.39 | 39.79 | 8.7% |