| 年份 | 尼日尔 |
|---|---|
| 2023 | - |
| 2022 | 113.241 |
| 2021 | 109.114 |
| 2020 | 105.814 |
| 2019 | 104.598 |
| 2018 | 104.623 |
| 2017 | 102.168 |
| 2016 | 101.793 |
| 2015 | 100 |
| 2014 | 97.8001 |
| 2013 | 98.1984 |
| 2012 | 98.5623 |
| 2011 | 93.594 |
| 2010 | 90.0188 |
| 2009 | 86.9957 |
| 2008 | 83.4971 |
| 2007 | 75.8175 |
| 2006 | 70.8332 |
| 2005 | 69.789 |
| 2004 | 64.2714 |
| 2003 | 64.0236 |
| 2002 | 64.1445 |
| 2001 | 62.5359 |
| 2000 | 59.5509 |
| 1999 | 57.7165 |
| 1998 | 57.4981 |
| 1997 | 54.2035 |
| 1996 | 50.6614 |
| 1995 | 47.361 |
| 1994 | 45.4305 |
| 1993 | 37.1728 |
| 1992 | 38.6688 |
| 1991 | 40.7907 |
| 1990 | 41.8971 |
| 1989 | 30.064 |
| 1988 | 29.6489 |
| 1987 | 31.3082 |
| 1986 | 30.7895 |
| 1985 | 32.1395 |
| 1984 | 34.1547 |
| 1983 | 30.5724 |
| 1982 | 28.3603 |
| 1981 | 25.7821 |
| 1980 | 23.1229 |
| 1979 | 19.0949 |
| 1978 | 18.2575 |
| 1977 | 16.4169 |
| 1976 | 14.1834 |
| 1975 | 12.6168 |
| 1974 | 13.4785 |
| 1973 | 12.521 |
| 1972 | 9.2176 |
| 1971 | 8.91786 |
| 1970 | 8.86469 |
| 1969 | 8.27419 |
| 1968 | 7.62998 |
| 1967 | 7.90015 |
| 1966 | 8.33517 |
| 1965 | 7.94144 |
| 1964 | 7.34796 |
| 1963 | 7.40117 |
| 1962 | 7.34524 |
| 1961 | 7.40767 |
| 1960 | 7.16452 |