| 2024 | 0 | 0.00017 | — | 0% |
| 2023 | 0 | 0.00019 | — | 0% |
| 2022 | 0 | 0.00018 | — | 0% |
| 2021 | 0 | 0.00017 | — | 0% |
| 2020 | 0 | 0.00016 | — | 0% |
| 2019 | 0 | 0.00019 | — | 0% |
| 2018 | 0 | 0.00019 | — | 0% |
| 2017 | 0 | 0.00019 | — | 0% |
| 2016 | 0.0000034 | 0.00019 | — | 1.8% |
| 2015 | 0.0000034 | 0.00019 | — | 1.8% |
| 2014 | 0.0000017 | 0.00019 | — | 0.89% |
| 2013 | 0.0000017 | 0.00019 | — | 0.89% |
| 2012 | 0.0000017 | 0.00019 | — | 0.88% |
| 2011 | 0.000014 | 0.0002 | — | 6.7% |
| 2010 | 0.000014 | 0.0002 | — | 6.7% |
| 2009 | 0.000014 | 0.0002 | — | 6.7% |
| 2008 | 0.0000068 | 0.00016 | — | 4.4% |
| 2007 | 0.0000068 | 0.0034 | — | 0.2% |
| 2006 | 0.0000068 | 0.0033 | — | 0.21% |
| 2005 | 0.0000068 | 0.0033 | — | 0.21% |
| 2004 | 0 | 0.0033 | — | 0% |
| 2003 | 0 | 0.0033 | — | 0% |
| 2002 | 0 | 0.0033 | — | 0% |
| 2001 | 0 | 0.0033 | — | 0% |
| 2000 | 0 | 0.0032 | — | 0% |
| 1999 | 0 | 0.0032 | — | 0% |
| 1998 | 0 | 0.0032 | — | 0% |
| 1997 | 0 | 0.0032 | — | 0% |
| 1996 | 0 | 0.0032 | — | 0% |
| 1995 | 0 | 0.0032 | — | 0% |
| 1994 | 0 | 0.003 | — | 0% |
| 1993 | 0 | 0.003 | — | 0% |
| 1992 | 0 | 0.003 | — | 0% |
| 1991 | 0 | 0.003 | — | 0% |
| 1990 | 0 | 0.003 | — | 0% |
| 1989 | 0 | 0.0028 | — | 0% |
| 1988 | 0 | 0.003 | — | 0% |
| 1987 | 0 | 0.0028 | — | 0% |
| 1986 | 0 | 0.0028 | — | 0% |
| 1985 | 0 | 0.003 | — | 0% |
| 1984 | 0 | 0.0028 | — | 0% |
| 1983 | 0 | 0.0021 | — | 0% |
| 1982 | 0 | 0.0021 | — | 0% |
| 1981 | 0 | 0.0021 | — | 0% |
| 1980 | 0 | 0.0021 | — | 0% |