| 年份 | 南苏丹 |
|---|---|
| 2023 | - |
| 2022 | 1.52248 |
| 2021 | 1.33037 |
| 2020 | 1.50627 |
| 2019 | 0.502203 |
| 2018 | -2.49754 |
| 2017 | -3.75548 |
| 2016 | -1.15178 |
| 2015 | -0.169452 |
| 2014 | 0.961085 |
| 2013 | 3.70947 |
| 2012 | 4.37942 |
| 2011 | 5.29882 |
| 2010 | 5.1236 |
| 2009 | 4.49127 |
| 2008 | 4.71113 |
| 2007 | 4.72269 |
| 2006 | 4.6766 |
| 2005 | 4.61419 |
| 2004 | 4.53974 |
| 2003 | 4.47884 |
| 2002 | 4.46033 |
| 2001 | 4.47743 |
| 2000 | 4.41867 |
| 1999 | 2.60992 |
| 1998 | 1.94935 |
| 1997 | 2.80337 |
| 1996 | 2.4748 |
| 1995 | 3.04821 |
| 1994 | 2.45442 |
| 1993 | 1.22713 |
| 1992 | 1.82787 |
| 1991 | 2.41991 |
| 1990 | 0.93453 |
| 1989 | -2.27396 |
| 1988 | -1.626 |
| 1987 | 1.52661 |
| 1986 | 2.36594 |
| 1985 | 2.23287 |
| 1984 | 2.20748 |
| 1983 | 2.34245 |
| 1982 | 2.40299 |
| 1981 | 2.40067 |
| 1980 | 2.39534 |
| 1979 | 2.39558 |
| 1978 | 2.40274 |
| 1977 | 2.39786 |
| 1976 | 2.40047 |
| 1975 | 2.41363 |
| 1974 | 2.43018 |
| 1973 | 2.21924 |
| 1972 | 1.97942 |
| 1971 | 1.61441 |
| 1970 | 1.21965 |
| 1969 | 1.22394 |
| 1968 | 1.22673 |
| 1967 | 1.14409 |
| 1966 | 1.31724 |
| 1965 | 1.7625 |
| 1964 | 1.71314 |
| 1963 | 1.4587 |
| 1962 | 1.45821 |
| 1961 | 1.40795 |
| 1960 | - |