| 年份 | 巴林 |
|---|---|
| 2023 | - |
| 2022 | 0.359461 |
| 2021 | 0.359049 |
| 2020 | 0.350488 |
| 2019 | 0.332759 |
| 2018 | 0.318833 |
| 2017 | 0.314625 |
| 2016 | 0.315213 |
| 2015 | 0.31074 |
| 2014 | 0.296471 |
| 2013 | 0.283895 |
| 2012 | 0.28076 |
| 2011 | 0.2756 |
| 2010 | 0.26313 |
| 2009 | 0.256866 |
| 2008 | 0.258483 |
| 2007 | 0.261104 |
| 2006 | 0.266439 |
| 2005 | 0.273299 |
| 2004 | 0.282476 |
| 2003 | 0.288998 |
| 2002 | 0.284896 |
| 2001 | 0.274847 |
| 2000 | 0.264914 |
| 1999 | 0.255146 |
| 1998 | 0.246011 |
| 1997 | 0.238313 |
| 1996 | 0.233087 |
| 1995 | 0.230403 |
| 1994 | 0.23035 |
| 1993 | 0.231552 |
| 1992 | 0.232897 |
| 1991 | 0.235341 |
| 1990 | 0.237403 |
| 1989 | 0.238418 |
| 1988 | 0.238607 |
| 1987 | 0.237971 |
| 1986 | 0.237099 |
| 1985 | 0.235708 |
| 1984 | 0.23673 |
| 1983 | 0.240823 |
| 1982 | 0.244632 |
| 1981 | 0.246528 |
| 1980 | 0.247366 |
| 1979 | 0.249192 |
| 1978 | 0.251906 |
| 1977 | 0.254767 |
| 1976 | 0.25717 |
| 1975 | 0.258652 |
| 1974 | 0.257359 |
| 1973 | 0.252702 |
| 1972 | 0.246219 |
| 1971 | 0.235866 |
| 1970 | 0.217469 |
| 1969 | 0.197761 |
| 1968 | 0.184805 |
| 1967 | 0.176888 |
| 1966 | 0.173069 |
| 1965 | 0.173804 |
| 1964 | 0.181032 |
| 1963 | 0.192342 |
| 1962 | 0.202822 |
| 1961 | 0.211782 |
| 1960 | 0.218504 |