| 年份 | 毛里塔尼亚 |
|---|---|
| 2023 | - |
| 2022 | 3.22326 |
| 2021 | 3.2594 |
| 2020 | 3.30474 |
| 2019 | 3.34011 |
| 2018 | 3.36883 |
| 2017 | 3.41149 |
| 2016 | 3.46948 |
| 2015 | 3.54463 |
| 2014 | 3.64051 |
| 2013 | 3.75619 |
| 2012 | 3.76821 |
| 2011 | 3.65598 |
| 2010 | 3.52374 |
| 2009 | 3.3717 |
| 2008 | 3.20233 |
| 2007 | 3.1048 |
| 2006 | 3.08921 |
| 2005 | 3.07199 |
| 2004 | 3.05789 |
| 2003 | 3.04707 |
| 2002 | 3.03437 |
| 2001 | 3.02246 |
| 2000 | 3.0141 |
| 1999 | 3.00825 |
| 1998 | 3.00163 |
| 1997 | 2.99481 |
| 1996 | 2.98779 |
| 1995 | 2.98335 |
| 1994 | 2.98541 |
| 1993 | 2.99073 |
| 1992 | 2.99645 |
| 1991 | 2.99729 |
| 1990 | 2.99191 |
| 1989 | 2.98349 |
| 1988 | 2.97445 |
| 1987 | 2.96714 |
| 1986 | 2.95997 |
| 1985 | 2.95219 |
| 1984 | 2.9437 |
| 1983 | 2.93481 |
| 1982 | 2.92489 |
| 1981 | 2.91393 |
| 1980 | 2.90225 |
| 1979 | 2.88924 |
| 1978 | 2.87508 |
| 1977 | 2.86015 |
| 1976 | 2.84339 |
| 1975 | 2.82428 |
| 1974 | 2.80365 |
| 1973 | 2.7813 |
| 1972 | 2.75702 |
| 1971 | 2.73172 |
| 1970 | 2.70465 |
| 1969 | 2.67511 |
| 1968 | 2.64386 |
| 1967 | 2.60988 |
| 1966 | 2.57179 |
| 1965 | 2.52884 |
| 1964 | 2.48046 |
| 1963 | 2.42667 |
| 1962 | 2.36794 |
| 1961 | 2.30479 |
| 1960 | 2.2384 |