| 年份 | 南苏丹 |
|---|---|
| 2023 | - |
| 2022 | 0.591599 |
| 2021 | 0.582255 |
| 2020 | 0.569039 |
| 2019 | 0.553165 |
| 2018 | 0.534388 |
| 2017 | 0.511901 |
| 2016 | 0.491233 |
| 2015 | 0.478535 |
| 2014 | 0.469862 |
| 2013 | 0.464958 |
| 2012 | 0.465036 |
| 2011 | 0.466205 |
| 2010 | 0.468239 |
| 2009 | 0.469007 |
| 2008 | 0.46734 |
| 2007 | 0.464074 |
| 2006 | 0.460095 |
| 2005 | 0.456009 |
| 2004 | 0.451241 |
| 2003 | 0.445586 |
| 2002 | 0.439681 |
| 2001 | 0.433556 |
| 2000 | 0.427047 |
| 1999 | 0.420787 |
| 1998 | 0.423971 |
| 1997 | 0.428845 |
| 1996 | 0.425901 |
| 1995 | 0.422625 |
| 1994 | 0.417213 |
| 1993 | 0.413668 |
| 1992 | 0.414068 |
| 1991 | 0.412518 |
| 1990 | 0.408803 |
| 1989 | 0.405032 |
| 1988 | 0.42257 |
| 1987 | 0.441219 |
| 1986 | 0.438957 |
| 1985 | 0.434448 |
| 1984 | 0.430078 |
| 1983 | 0.425158 |
| 1982 | 0.418865 |
| 1981 | 0.411837 |
| 1980 | 0.405089 |
| 1979 | 0.399011 |
| 1978 | 0.393386 |
| 1977 | 0.388233 |
| 1976 | 0.384423 |
| 1975 | 0.381928 |
| 1974 | 0.380551 |
| 1973 | 0.380219 |
| 1972 | 0.383471 |
| 1971 | 0.390457 |
| 1970 | 0.402501 |
| 1969 | 0.420056 |
| 1968 | 0.437914 |
| 1967 | 0.455603 |
| 1966 | 0.474984 |
| 1965 | 0.492345 |
| 1964 | 0.50225 |
| 1963 | 0.512492 |
| 1962 | 0.523234 |
| 1961 | 0.530084 |
| 1960 | 0.537343 |