| 年份 | 北马里亚纳群岛 |
|---|---|
| 2023 | - |
| 2022 | 15.8766 |
| 2021 | 14.2857 |
| 2020 | 12.7643 |
| 2019 | 11.3939 |
| 2018 | 10.1763 |
| 2017 | 9.09295 |
| 2016 | 8.15312 |
| 2015 | 7.32338 |
| 2014 | 6.58513 |
| 2013 | 5.91703 |
| 2012 | 5.33832 |
| 2011 | 4.84046 |
| 2010 | 4.3589 |
| 2009 | 3.9627 |
| 2008 | 3.70074 |
| 2007 | 3.50438 |
| 2006 | 3.33758 |
| 2005 | 3.16914 |
| 2004 | 2.96824 |
| 2003 | 2.74391 |
| 2002 | 2.51568 |
| 2001 | 2.27471 |
| 2000 | 2.07579 |
| 1999 | 2.05796 |
| 1998 | 2.18254 |
| 1997 | 2.36028 |
| 1996 | 2.5921 |
| 1995 | 2.74101 |
| 1994 | 2.73256 |
| 1993 | 2.66323 |
| 1992 | 2.56977 |
| 1991 | 2.46902 |
| 1990 | 2.38722 |
| 1989 | 2.38703 |
| 1988 | 2.46079 |
| 1987 | 2.54077 |
| 1986 | 2.6357 |
| 1985 | 2.80528 |
| 1984 | 3.05965 |
| 1983 | 3.4014 |
| 1982 | 3.87426 |
| 1981 | 4.47223 |
| 1980 | 5.07218 |
| 1979 | 5.38043 |
| 1978 | 5.37501 |
| 1977 | 5.32992 |
| 1976 | 5.23902 |
| 1975 | 5.18779 |
| 1974 | 5.16518 |
| 1973 | 5.17872 |
| 1972 | 5.21506 |
| 1971 | 5.39809 |
| 1970 | 5.57377 |
| 1969 | 5.62935 |
| 1968 | 5.75061 |
| 1967 | 5.80056 |
| 1966 | 5.81419 |
| 1965 | 5.85376 |
| 1964 | 5.86433 |
| 1963 | 5.85708 |
| 1962 | 5.82208 |
| 1961 | 5.72592 |
| 1960 | 5.74458 |