| 年份 | 毛里塔尼亚  | 
                                                            
|---|---|
| 2023 | - | 
| 2022 | 0.381221 | 
| 2021 | 0.410424 | 
| 2020 | 0.445079 | 
| 2019 | 0.476871 | 
| 2018 | 0.505314 | 
| 2017 | 0.538907 | 
| 2016 | 0.578625 | 
| 2015 | 0.625335 | 
| 2014 | 0.679989 | 
| 2013 | 0.743471 | 
| 2012 | 0.713191 | 
| 2011 | 0.587339 | 
| 2010 | 0.473772 | 
| 2009 | 0.373993 | 
| 2008 | 0.289714 | 
| 2007 | 0.250596 | 
| 2006 | 0.249356 | 
| 2005 | 0.248552 | 
| 2004 | 0.24798 | 
| 2003 | 0.24782 | 
| 2002 | 0.248329 | 
| 2001 | 0.250085 | 
| 2000 | 0.250425 | 
| 1999 | 0.248349 | 
| 1998 | 0.246787 | 
| 1997 | 0.24592 | 
| 1996 | 0.248007 | 
| 1995 | 0.254125 | 
| 1994 | 0.25768 | 
| 1993 | 0.257026 | 
| 1992 | 0.249535 | 
| 1991 | 0.241178 | 
| 1990 | 0.23897 | 
| 1989 | 0.238655 | 
| 1988 | 0.238404 | 
| 1987 | 0.23626 | 
| 1986 | 0.23443 | 
| 1985 | 0.232589 | 
| 1984 | 0.230706 | 
| 1983 | 0.229133 | 
| 1982 | 0.227582 | 
| 1981 | 0.225933 | 
| 1980 | 0.22434 | 
| 1979 | 0.222784 | 
| 1978 | 0.221331 | 
| 1977 | 0.220092 | 
| 1976 | 0.218053 | 
| 1975 | 0.214631 | 
| 1974 | 0.21065 | 
| 1973 | 0.20632 | 
| 1972 | 0.20172 | 
| 1971 | 0.197192 | 
| 1970 | 0.192242 | 
| 1969 | 0.187035 | 
| 1968 | 0.181818 | 
| 1967 | 0.175895 | 
| 1966 | 0.169709 | 
| 1965 | 0.163337 | 
| 1964 | 0.156665 | 
| 1963 | 0.149593 | 
| 1962 | 0.142239 | 
| 1961 | 0.13486 | 
| 1960 | 0.126996 |