| 年份 | 北马里亚纳群岛 |
|---|---|
| 2023 | - |
| 2022 | 1.34034 |
| 2021 | 1.12983 |
| 2020 | 0.951916 |
| 2019 | 0.830496 |
| 2018 | 0.763855 |
| 2017 | 0.739112 |
| 2016 | 0.737132 |
| 2015 | 0.730101 |
| 2014 | 0.694584 |
| 2013 | 0.641947 |
| 2012 | 0.586771 |
| 2011 | 0.506913 |
| 2010 | 0.421603 |
| 2009 | 0.374001 |
| 2008 | 0.339901 |
| 2007 | 0.312771 |
| 2006 | 0.293675 |
| 2005 | 0.276117 |
| 2004 | 0.260095 |
| 2003 | 0.233213 |
| 2002 | 0.20844 |
| 2001 | 0.19338 |
| 2000 | 0.179263 |
| 1999 | 0.178547 |
| 1998 | 0.200688 |
| 1997 | 0.220765 |
| 1996 | 0.227739 |
| 1995 | 0.234742 |
| 1994 | 0.243136 |
| 1993 | 0.238913 |
| 1992 | 0.236792 |
| 1991 | 0.248643 |
| 1990 | 0.257166 |
| 1989 | 0.266694 |
| 1988 | 0.288616 |
| 1987 | 0.304566 |
| 1986 | 0.302285 |
| 1985 | 0.301981 |
| 1984 | 0.313625 |
| 1983 | 0.322545 |
| 1982 | 0.326934 |
| 1981 | 0.343692 |
| 1980 | 0.36729 |
| 1979 | 0.352397 |
| 1978 | 0.31804 |
| 1977 | 0.294029 |
| 1976 | 0.275482 |
| 1975 | 0.269019 |
| 1974 | 0.269317 |
| 1973 | 0.292278 |
| 1972 | 0.302572 |
| 1971 | 0.275103 |
| 1970 | 0.240848 |
| 1969 | 0.266772 |
| 1968 | 0.341168 |
| 1967 | 0.362117 |
| 1966 | 0.367578 |
| 1965 | 0.370262 |
| 1964 | 0.393066 |
| 1963 | 0.437774 |
| 1962 | 0.463662 |
| 1961 | 0.512364 |
| 1960 | 0.550269 |