| 年份 | 南苏丹 |
|---|---|
| 2023 | - |
| 2022 | 0.395936 |
| 2021 | 0.390493 |
| 2020 | 0.383122 |
| 2019 | 0.372779 |
| 2018 | 0.362107 |
| 2017 | 0.355768 |
| 2016 | 0.353759 |
| 2015 | 0.352345 |
| 2014 | 0.35221 |
| 2013 | 0.352776 |
| 2012 | 0.351732 |
| 2011 | 0.350534 |
| 2010 | 0.348637 |
| 2009 | 0.346465 |
| 2008 | 0.344461 |
| 2007 | 0.34162 |
| 2006 | 0.338136 |
| 2005 | 0.334381 |
| 2004 | 0.330401 |
| 2003 | 0.326035 |
| 2002 | 0.321459 |
| 2001 | 0.316396 |
| 2000 | 0.310641 |
| 1999 | 0.304664 |
| 1998 | 0.307082 |
| 1997 | 0.31096 |
| 1996 | 0.308022 |
| 1995 | 0.305332 |
| 1994 | 0.300672 |
| 1993 | 0.297512 |
| 1992 | 0.29787 |
| 1991 | 0.296395 |
| 1990 | 0.293163 |
| 1989 | 0.290755 |
| 1988 | 0.309992 |
| 1987 | 0.33166 |
| 1986 | 0.333771 |
| 1985 | 0.333385 |
| 1984 | 0.332878 |
| 1983 | 0.331257 |
| 1982 | 0.327834 |
| 1981 | 0.32327 |
| 1980 | 0.318683 |
| 1979 | 0.314242 |
| 1978 | 0.309751 |
| 1977 | 0.305246 |
| 1976 | 0.301417 |
| 1975 | 0.29893 |
| 1974 | 0.297724 |
| 1973 | 0.298277 |
| 1972 | 0.303047 |
| 1971 | 0.310816 |
| 1970 | 0.322262 |
| 1969 | 0.337699 |
| 1968 | 0.352265 |
| 1967 | 0.366043 |
| 1966 | 0.38124 |
| 1965 | 0.394978 |
| 1964 | 0.403437 |
| 1963 | 0.412858 |
| 1962 | 0.423399 |
| 1961 | 0.431834 |
| 1960 | 0.441346 |