| 年份 | 南苏丹 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 4.469 |
| 2020 | 4.543 |
| 2019 | 4.619 |
| 2018 | 4.696 |
| 2017 | 4.775 |
| 2016 | 4.855 |
| 2015 | 4.937 |
| 2014 | 5.022 |
| 2013 | 5.108 |
| 2012 | 5.197 |
| 2011 | 5.286 |
| 2010 | 5.376 |
| 2009 | 5.465 |
| 2008 | 5.552 |
| 2007 | 5.638 |
| 2006 | 5.82 |
| 2005 | 6.171 |
| 2004 | 6.517 |
| 2003 | 6.851 |
| 2002 | 7.191 |
| 2001 | 7.369 |
| 2000 | 7.513 |
| 1999 | 7.672 |
| 1998 | 7.817 |
| 1997 | 7.965 |
| 1996 | 7.985 |
| 1995 | 7.962 |
| 1994 | 7.989 |
| 1993 | 8.005 |
| 1992 | 7.999 |
| 1991 | 8.004 |
| 1990 | 7.988 |
| 1989 | 7.993 |
| 1988 | 8.012 |
| 1987 | 7.947 |
| 1986 | 7.907 |
| 1985 | 7.769 |
| 1984 | 7.437 |
| 1983 | 7.134 |
| 1982 | 6.813 |
| 1981 | 6.829 |
| 1980 | 6.85 |
| 1979 | 6.874 |
| 1978 | 6.897 |
| 1977 | 6.913 |
| 1976 | 6.922 |
| 1975 | 6.924 |
| 1974 | 6.92 |
| 1973 | 6.912 |
| 1972 | 6.903 |
| 1971 | 6.892 |
| 1970 | 6.881 |
| 1969 | 6.869 |
| 1968 | 6.855 |
| 1967 | 6.838 |
| 1966 | 6.819 |
| 1965 | 6.8 |
| 1964 | 6.781 |
| 1963 | 6.763 |
| 1962 | 6.747 |
| 1961 | 6.733 |
| 1960 | 6.721 |