| 年份 | 北马里亚纳群岛 |
|---|---|
| 2023 | - |
| 2022 | 3.06118 |
| 2021 | 2.74203 |
| 2020 | 2.44816 |
| 2019 | 2.15981 |
| 2018 | 1.87171 |
| 2017 | 1.62657 |
| 2016 | 1.41228 |
| 2015 | 1.21956 |
| 2014 | 1.0868 |
| 2013 | 0.992047 |
| 2012 | 0.912001 |
| 2011 | 0.864 |
| 2010 | 0.815997 |
| 2009 | 0.75598 |
| 2008 | 0.714962 |
| 2007 | 0.670446 |
| 2006 | 0.611437 |
| 2005 | 0.541707 |
| 2004 | 0.469784 |
| 2003 | 0.408966 |
| 2002 | 0.373932 |
| 2001 | 0.352053 |
| 2000 | 0.33708 |
| 1999 | 0.350225 |
| 1998 | 0.38598 |
| 1997 | 0.425277 |
| 1996 | 0.474005 |
| 1995 | 0.514792 |
| 1994 | 0.519424 |
| 1993 | 0.499056 |
| 1992 | 0.467381 |
| 1991 | 0.448518 |
| 1990 | 0.446605 |
| 1989 | 0.447531 |
| 1988 | 0.474218 |
| 1987 | 0.518951 |
| 1986 | 0.55761 |
| 1985 | 0.590642 |
| 1984 | 0.640177 |
| 1983 | 0.685525 |
| 1982 | 0.713753 |
| 1981 | 0.774289 |
| 1980 | 0.861605 |
| 1979 | 0.931301 |
| 1978 | 0.992926 |
| 1977 | 1.07683 |
| 1976 | 1.11739 |
| 1975 | 1.09935 |
| 1974 | 1.09047 |
| 1973 | 1.0463 |
| 1972 | 0.947635 |
| 1971 | 0.869486 |
| 1970 | 0.787402 |
| 1969 | 0.735971 |
| 1968 | 0.774668 |
| 1967 | 0.806074 |
| 1966 | 0.758725 |
| 1965 | 0.716037 |
| 1964 | 0.710083 |
| 1963 | 0.692695 |
| 1962 | 0.704225 |
| 1961 | 0.737265 |
| 1960 | 0.78332 |