| 年份 | 南苏丹 |
|---|---|
| 2023 | - |
| 2022 | 12.6134 |
| 2021 | 12.4745 |
| 2020 | 12.2166 |
| 2019 | 11.804 |
| 2018 | 11.2089 |
| 2017 | 10.5809 |
| 2016 | 10.1568 |
| 2015 | 9.91107 |
| 2014 | 9.8117 |
| 2013 | 9.87949 |
| 2012 | 10.0294 |
| 2011 | 10.1749 |
| 2010 | 10.2706 |
| 2009 | 10.3385 |
| 2008 | 10.2559 |
| 2007 | 9.95625 |
| 2006 | 9.65118 |
| 2005 | 9.45845 |
| 2004 | 9.31145 |
| 2003 | 9.33797 |
| 2002 | 9.5882 |
| 2001 | 9.79354 |
| 2000 | 9.85677 |
| 1999 | 9.86224 |
| 1998 | 9.84702 |
| 1997 | 9.89807 |
| 1996 | 10.0558 |
| 1995 | 10.2111 |
| 1994 | 10.3598 |
| 1993 | 10.5036 |
| 1992 | 10.6338 |
| 1991 | 10.7431 |
| 1990 | 10.8201 |
| 1989 | 10.8574 |
| 1988 | 10.6221 |
| 1987 | 10.3575 |
| 1986 | 10.3006 |
| 1985 | 10.2594 |
| 1984 | 10.2503 |
| 1983 | 10.2629 |
| 1982 | 10.2815 |
| 1981 | 10.314 |
| 1980 | 10.3621 |
| 1979 | 10.4042 |
| 1978 | 10.4361 |
| 1977 | 10.4606 |
| 1976 | 10.4664 |
| 1975 | 10.4479 |
| 1974 | 10.405 |
| 1973 | 10.3344 |
| 1972 | 10.222 |
| 1971 | 10.0686 |
| 1970 | 9.87521 |
| 1969 | 9.72847 |
| 1968 | 9.70593 |
| 1967 | 9.80279 |
| 1966 | 10.0071 |
| 1965 | 10.2902 |
| 1964 | 10.5559 |
| 1963 | 10.7114 |
| 1962 | 10.7681 |
| 1961 | 10.7533 |
| 1960 | 10.6993 |