| 年份 | 巴林 |
|---|---|
| 2023 | - |
| 2022 | 0.638443 |
| 2021 | 0.617454 |
| 2020 | 0.604626 |
| 2019 | 0.589359 |
| 2018 | 0.586302 |
| 2017 | 0.606184 |
| 2016 | 0.62876 |
| 2015 | 0.632827 |
| 2014 | 0.612473 |
| 2013 | 0.580827 |
| 2012 | 0.548947 |
| 2011 | 0.524584 |
| 2010 | 0.507783 |
| 2009 | 0.502195 |
| 2008 | 0.511421 |
| 2007 | 0.519789 |
| 2006 | 0.521115 |
| 2005 | 0.512291 |
| 2004 | 0.48969 |
| 2003 | 0.4615 |
| 2002 | 0.445597 |
| 2001 | 0.443653 |
| 2000 | 0.446601 |
| 1999 | 0.450187 |
| 1998 | 0.451608 |
| 1997 | 0.446977 |
| 1996 | 0.437705 |
| 1995 | 0.428014 |
| 1994 | 0.41781 |
| 1993 | 0.405553 |
| 1992 | 0.394952 |
| 1991 | 0.39047 |
| 1990 | 0.392902 |
| 1989 | 0.398713 |
| 1988 | 0.403121 |
| 1987 | 0.40632 |
| 1986 | 0.411774 |
| 1985 | 0.418432 |
| 1984 | 0.420459 |
| 1983 | 0.417529 |
| 1982 | 0.411611 |
| 1981 | 0.404673 |
| 1980 | 0.408107 |
| 1979 | 0.427108 |
| 1978 | 0.450057 |
| 1977 | 0.470455 |
| 1976 | 0.486981 |
| 1975 | 0.503 |
| 1974 | 0.523742 |
| 1973 | 0.547343 |
| 1972 | 0.571673 |
| 1971 | 0.589109 |
| 1970 | 0.572946 |
| 1969 | 0.526226 |
| 1968 | 0.476688 |
| 1967 | 0.427783 |
| 1966 | 0.384748 |
| 1965 | 0.351793 |
| 1964 | 0.351075 |
| 1963 | 0.377128 |
| 1962 | 0.400141 |
| 1961 | 0.423256 |
| 1960 | 0.446507 |