| 年份 | 南苏丹 |
|---|---|
| 2023 | - |
| 2022 | 2.76093 |
| 2021 | 2.70008 |
| 2020 | 2.6418 |
| 2019 | 2.58514 |
| 2018 | 2.51755 |
| 2017 | 2.42426 |
| 2016 | 2.32633 |
| 2015 | 2.25588 |
| 2014 | 2.19655 |
| 2013 | 2.14776 |
| 2012 | 2.11777 |
| 2011 | 2.09135 |
| 2010 | 2.0692 |
| 2009 | 2.05226 |
| 2008 | 2.04824 |
| 2007 | 2.06909 |
| 2006 | 2.11386 |
| 2005 | 2.17513 |
| 2004 | 2.2389 |
| 2003 | 2.28966 |
| 2002 | 2.3192 |
| 2001 | 2.32984 |
| 2000 | 2.33406 |
| 1999 | 2.33844 |
| 1998 | 2.34863 |
| 1997 | 2.36525 |
| 1996 | 2.38519 |
| 1995 | 2.40782 |
| 1994 | 2.43101 |
| 1993 | 2.46305 |
| 1992 | 2.50535 |
| 1991 | 2.54231 |
| 1990 | 2.57093 |
| 1989 | 2.59361 |
| 1988 | 2.59463 |
| 1987 | 2.59209 |
| 1986 | 2.59822 |
| 1985 | 2.59862 |
| 1984 | 2.59541 |
| 1983 | 2.58525 |
| 1982 | 2.56827 |
| 1981 | 2.54871 |
| 1980 | 2.53128 |
| 1979 | 2.51679 |
| 1978 | 2.50527 |
| 1977 | 2.49707 |
| 1976 | 2.49255 |
| 1975 | 2.49114 |
| 1974 | 2.49259 |
| 1973 | 2.49739 |
| 1972 | 2.50499 |
| 1971 | 2.51161 |
| 1970 | 2.51574 |
| 1969 | 2.5179 |
| 1968 | 2.51481 |
| 1967 | 2.50704 |
| 1966 | 2.49944 |
| 1965 | 2.49291 |
| 1964 | 2.48474 |
| 1963 | 2.47779 |
| 1962 | 2.47329 |
| 1961 | 2.46746 |
| 1960 | 2.45974 |