| 年份 | 南苏丹 |
|---|---|
| 2023 | - |
| 2022 | 0.932419 |
| 2021 | 0.939332 |
| 2020 | 0.950551 |
| 2019 | 0.958465 |
| 2018 | 0.95175 |
| 2017 | 0.920408 |
| 2016 | 0.877883 |
| 2015 | 0.847298 |
| 2014 | 0.822605 |
| 2013 | 0.804654 |
| 2012 | 0.798566 |
| 2011 | 0.797018 |
| 2010 | 0.800782 |
| 2009 | 0.805512 |
| 2008 | 0.809685 |
| 2007 | 0.815523 |
| 2006 | 0.821367 |
| 2005 | 0.826247 |
| 2004 | 0.829542 |
| 2003 | 0.830348 |
| 2002 | 0.828937 |
| 2001 | 0.826494 |
| 2000 | 0.823334 |
| 1999 | 0.819422 |
| 1998 | 0.824878 |
| 1997 | 0.831267 |
| 1996 | 0.827501 |
| 1995 | 0.822436 |
| 1994 | 0.814939 |
| 1993 | 0.809194 |
| 1992 | 0.807901 |
| 1991 | 0.805798 |
| 1990 | 0.802771 |
| 1989 | 0.800221 |
| 1988 | 0.825728 |
| 1987 | 0.854825 |
| 1986 | 0.858466 |
| 1985 | 0.857983 |
| 1984 | 0.85548 |
| 1983 | 0.849382 |
| 1982 | 0.838931 |
| 1981 | 0.826973 |
| 1980 | 0.81611 |
| 1979 | 0.806542 |
| 1978 | 0.797972 |
| 1977 | 0.790361 |
| 1976 | 0.783669 |
| 1975 | 0.776773 |
| 1974 | 0.769333 |
| 1973 | 0.761065 |
| 1972 | 0.755972 |
| 1971 | 0.756141 |
| 1970 | 0.765409 |
| 1969 | 0.785102 |
| 1968 | 0.808799 |
| 1967 | 0.836145 |
| 1966 | 0.867107 |
| 1965 | 0.894228 |
| 1964 | 0.910505 |
| 1963 | 0.925912 |
| 1962 | 0.939506 |
| 1961 | 0.947083 |
| 1960 | 0.955406 |