| 年份 | 北马里亚纳群岛 |
|---|---|
| 2023 | - |
| 2022 | 1.43131 |
| 2021 | 1.25631 |
| 2020 | 1.08686 |
| 2019 | 0.966403 |
| 2018 | 0.880304 |
| 2017 | 0.806946 |
| 2016 | 0.760456 |
| 2015 | 0.729671 |
| 2014 | 0.687693 |
| 2013 | 0.65325 |
| 2012 | 0.624107 |
| 2011 | 0.582 |
| 2010 | 0.513847 |
| 2009 | 0.439189 |
| 2008 | 0.376918 |
| 2007 | 0.336019 |
| 2006 | 0.314754 |
| 2005 | 0.301584 |
| 2004 | 0.287317 |
| 2003 | 0.267 |
| 2002 | 0.241368 |
| 2001 | 0.214608 |
| 2000 | 0.201773 |
| 1999 | 0.21842 |
| 1998 | 0.253079 |
| 1997 | 0.282979 |
| 1996 | 0.317884 |
| 1995 | 0.348798 |
| 1994 | 0.344119 |
| 1993 | 0.33632 |
| 1992 | 0.336949 |
| 1991 | 0.326591 |
| 1990 | 0.314604 |
| 1989 | 0.32296 |
| 1988 | 0.329456 |
| 1987 | 0.326043 |
| 1986 | 0.339933 |
| 1985 | 0.369564 |
| 1984 | 0.415747 |
| 1983 | 0.487301 |
| 1982 | 0.578466 |
| 1981 | 0.668222 |
| 1980 | 0.735954 |
| 1979 | 0.752695 |
| 1978 | 0.720358 |
| 1977 | 0.660633 |
| 1976 | 0.612547 |
| 1975 | 0.584032 |
| 1974 | 0.520613 |
| 1973 | 0.437815 |
| 1972 | 0.359448 |
| 1971 | 0.283727 |
| 1970 | 0.262467 |
| 1969 | 0.316876 |
| 1968 | 0.387334 |
| 1967 | 0.431156 |
| 1966 | 0.445751 |
| 1965 | 0.46101 |
| 1964 | 0.47677 |
| 1963 | 0.472292 |
| 1962 | 0.487541 |
| 1961 | 0.48034 |
| 1960 | 0.472296 |