| 年份 | 南苏丹 |
|---|---|
| 2023 | - |
| 2022 | 0.690531 |
| 2021 | 0.690836 |
| 2020 | 0.696122 |
| 2019 | 0.696952 |
| 2018 | 0.688567 |
| 2017 | 0.673943 |
| 2016 | 0.657663 |
| 2015 | 0.645055 |
| 2014 | 0.635491 |
| 2013 | 0.629133 |
| 2012 | 0.625553 |
| 2011 | 0.623561 |
| 2010 | 0.622626 |
| 2009 | 0.621772 |
| 2008 | 0.620806 |
| 2007 | 0.619671 |
| 2006 | 0.618492 |
| 2005 | 0.61771 |
| 2004 | 0.617397 |
| 2003 | 0.617458 |
| 2002 | 0.618173 |
| 2001 | 0.619116 |
| 2000 | 0.619546 |
| 1999 | 0.619318 |
| 1998 | 0.628331 |
| 1997 | 0.638253 |
| 1996 | 0.639044 |
| 1995 | 0.63896 |
| 1994 | 0.636089 |
| 1993 | 0.633824 |
| 1992 | 0.634525 |
| 1991 | 0.633601 |
| 1990 | 0.631031 |
| 1989 | 0.628135 |
| 1988 | 0.652807 |
| 1987 | 0.680604 |
| 1986 | 0.683329 |
| 1985 | 0.683608 |
| 1984 | 0.683662 |
| 1983 | 0.68264 |
| 1982 | 0.679404 |
| 1981 | 0.67458 |
| 1980 | 0.669473 |
| 1979 | 0.66425 |
| 1978 | 0.658865 |
| 1977 | 0.652985 |
| 1976 | 0.646838 |
| 1975 | 0.640842 |
| 1974 | 0.634679 |
| 1973 | 0.628063 |
| 1972 | 0.625239 |
| 1971 | 0.62817 |
| 1970 | 0.640278 |
| 1969 | 0.662738 |
| 1968 | 0.690402 |
| 1967 | 0.723085 |
| 1966 | 0.758891 |
| 1965 | 0.789827 |
| 1964 | 0.810194 |
| 1963 | 0.828485 |
| 1962 | 0.844096 |
| 1961 | 0.854811 |
| 1960 | 0.867672 |