| 年份 | 北马里亚纳群岛 |
|---|---|
| 2023 | - |
| 2022 | 3.75938 |
| 2021 | 4.30859 |
| 2020 | 4.97038 |
| 2019 | 5.72491 |
| 2018 | 6.52964 |
| 2017 | 7.39137 |
| 2016 | 8.2334 |
| 2015 | 8.98962 |
| 2014 | 9.66455 |
| 2013 | 10.2065 |
| 2012 | 10.5937 |
| 2011 | 10.834 |
| 2010 | 10.7215 |
| 2009 | 10.4361 |
| 2008 | 10.0703 |
| 2007 | 9.45154 |
| 2006 | 8.71824 |
| 2005 | 7.98982 |
| 2004 | 7.33952 |
| 2003 | 6.80394 |
| 2002 | 6.36185 |
| 2001 | 5.97647 |
| 2000 | 5.69475 |
| 1999 | 5.70026 |
| 1998 | 5.94523 |
| 1997 | 6.25465 |
| 1996 | 6.67369 |
| 1995 | 6.88351 |
| 1994 | 6.60967 |
| 1993 | 6.16877 |
| 1992 | 5.68901 |
| 1991 | 5.21022 |
| 1990 | 4.77186 |
| 1989 | 4.38303 |
| 1988 | 4.02586 |
| 1987 | 3.68972 |
| 1986 | 3.3874 |
| 1985 | 3.15779 |
| 1984 | 3.06475 |
| 1983 | 3.08486 |
| 1982 | 3.18623 |
| 1981 | 3.44718 |
| 1980 | 3.75157 |
| 1979 | 3.87191 |
| 1978 | 3.85489 |
| 1977 | 3.81846 |
| 1976 | 3.7426 |
| 1975 | 3.57977 |
| 1974 | 3.39806 |
| 1973 | 3.28733 |
| 1972 | 3.23503 |
| 1971 | 3.21252 |
| 1970 | 3.31112 |
| 1969 | 3.48564 |
| 1968 | 3.55379 |
| 1967 | 3.5336 |
| 1966 | 3.53756 |
| 1965 | 3.59 |
| 1964 | 3.662 |
| 1963 | 3.72586 |
| 1962 | 3.74865 |
| 1961 | 3.79803 |
| 1960 | 3.92812 |