| 年份 | 南苏丹  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 1.74503 | 
| 2021 | 1.71053 | 
| 2020 | 1.67322 | 
| 2019 | 1.63184 | 
| 2018 | 1.58269 | 
| 2017 | 1.52351 | 
| 2016 | 1.46405 | 
| 2015 | 1.41365 | 
| 2014 | 1.37416 | 
| 2013 | 1.35024 | 
| 2012 | 1.34222 | 
| 2011 | 1.34778 | 
| 2010 | 1.36561 | 
| 2009 | 1.38331 | 
| 2008 | 1.39162 | 
| 2007 | 1.39236 | 
| 2006 | 1.38648 | 
| 2005 | 1.37999 | 
| 2004 | 1.3759 | 
| 2003 | 1.37597 | 
| 2002 | 1.38119 | 
| 2001 | 1.39039 | 
| 2000 | 1.40189 | 
| 1999 | 1.41544 | 
| 1998 | 1.43495 | 
| 1997 | 1.45548 | 
| 1996 | 1.47272 | 
| 1995 | 1.48985 | 
| 1994 | 1.50653 | 
| 1993 | 1.52392 | 
| 1992 | 1.54166 | 
| 1991 | 1.55832 | 
| 1990 | 1.574 | 
| 1989 | 1.58859 | 
| 1988 | 1.61673 | 
| 1987 | 1.64326 | 
| 1986 | 1.65371 | 
| 1985 | 1.66199 | 
| 1984 | 1.66763 | 
| 1983 | 1.66916 | 
| 1982 | 1.66633 | 
| 1981 | 1.66145 | 
| 1980 | 1.65707 | 
| 1979 | 1.65321 | 
| 1978 | 1.65001 | 
| 1977 | 1.64719 | 
| 1976 | 1.64422 | 
| 1975 | 1.64086 | 
| 1974 | 1.63744 | 
| 1973 | 1.63458 | 
| 1972 | 1.63628 | 
| 1971 | 1.64255 | 
| 1970 | 1.65559 | 
| 1969 | 1.67562 | 
| 1968 | 1.69491 | 
| 1967 | 1.71342 | 
| 1966 | 1.733 | 
| 1965 | 1.74899 | 
| 1964 | 1.75618 | 
| 1963 | 1.76295 | 
| 1962 | 1.76965 | 
| 1961 | 1.77652 | 
| 1960 | 1.79265 |