| 年份 | 南苏丹  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 3.29092 | 
| 2021 | 3.20428 | 
| 2020 | 3.11772 | 
| 2019 | 3.03859 | 
| 2018 | 2.96366 | 
| 2017 | 2.89013 | 
| 2016 | 2.82612 | 
| 2015 | 2.77415 | 
| 2014 | 2.72733 | 
| 2013 | 2.68451 | 
| 2012 | 2.64431 | 
| 2011 | 2.60486 | 
| 2010 | 2.56375 | 
| 2009 | 2.52108 | 
| 2008 | 2.47704 | 
| 2007 | 2.42824 | 
| 2006 | 2.37461 | 
| 2005 | 2.31755 | 
| 2004 | 2.27341 | 
| 2003 | 2.25504 | 
| 2002 | 2.26357 | 
| 2001 | 2.29932 | 
| 2000 | 2.35709 | 
| 1999 | 2.41584 | 
| 1998 | 2.45747 | 
| 1997 | 2.48451 | 
| 1996 | 2.50213 | 
| 1995 | 2.51632 | 
| 1994 | 2.52941 | 
| 1993 | 2.5488 | 
| 1992 | 2.57653 | 
| 1991 | 2.60587 | 
| 1990 | 2.63583 | 
| 1989 | 2.66891 | 
| 1988 | 2.68586 | 
| 1987 | 2.70315 | 
| 1986 | 2.73618 | 
| 1985 | 2.76735 | 
| 1984 | 2.79692 | 
| 1983 | 2.82194 | 
| 1982 | 2.84095 | 
| 1981 | 2.85655 | 
| 1980 | 2.87184 | 
| 1979 | 2.8859 | 
| 1978 | 2.89764 | 
| 1977 | 2.90639 | 
| 1976 | 2.91283 | 
| 1975 | 2.91788 | 
| 1974 | 2.92146 | 
| 1973 | 2.92336 | 
| 1972 | 2.92765 | 
| 1971 | 2.93597 | 
| 1970 | 2.95024 | 
| 1969 | 2.96999 | 
| 1968 | 2.98982 | 
| 1967 | 3.00987 | 
| 1966 | 3.0296 | 
| 1965 | 3.04475 | 
| 1964 | 3.05321 | 
| 1963 | 3.06168 | 
| 1962 | 3.06896 | 
| 1961 | 3.0713 | 
| 1960 | 3.07146 |