| 年份 | 南苏丹 |
|---|---|
| 2023 | - |
| 2022 | 0.357948 |
| 2021 | 0.349081 |
| 2020 | 0.339203 |
| 2019 | 0.325697 |
| 2018 | 0.312751 |
| 2017 | 0.307944 |
| 2016 | 0.311103 |
| 2015 | 0.313285 |
| 2014 | 0.320437 |
| 2013 | 0.328394 |
| 2012 | 0.327518 |
| 2011 | 0.324576 |
| 2010 | 0.317425 |
| 2009 | 0.309736 |
| 2008 | 0.303955 |
| 2007 | 0.296298 |
| 2006 | 0.287865 |
| 2005 | 0.279493 |
| 2004 | 0.271605 |
| 2003 | 0.264596 |
| 2002 | 0.258425 |
| 2001 | 0.252436 |
| 2000 | 0.246071 |
| 1999 | 0.239472 |
| 1998 | 0.23755 |
| 1997 | 0.236245 |
| 1996 | 0.231717 |
| 1995 | 0.228111 |
| 1994 | 0.223076 |
| 1993 | 0.218709 |
| 1992 | 0.216268 |
| 1991 | 0.212935 |
| 1990 | 0.208803 |
| 1989 | 0.205614 |
| 1988 | 0.214538 |
| 1987 | 0.223973 |
| 1986 | 0.221935 |
| 1985 | 0.218409 |
| 1984 | 0.215018 |
| 1983 | 0.211373 |
| 1982 | 0.207121 |
| 1981 | 0.203065 |
| 1980 | 0.199892 |
| 1979 | 0.197934 |
| 1978 | 0.197131 |
| 1977 | 0.197229 |
| 1976 | 0.198642 |
| 1975 | 0.200613 |
| 1974 | 0.202701 |
| 1973 | 0.204851 |
| 1972 | 0.208316 |
| 1971 | 0.213865 |
| 1970 | 0.222783 |
| 1969 | 0.235287 |
| 1968 | 0.24834 |
| 1967 | 0.261695 |
| 1966 | 0.276246 |
| 1965 | 0.289057 |
| 1964 | 0.296942 |
| 1963 | 0.30492 |
| 1962 | 0.312518 |
| 1961 | 0.317096 |
| 1960 | 0.320929 |