| 年份 | 北马里亚纳群岛 |
|---|---|
| 2023 | - |
| 2022 | 0.749014 |
| 2021 | 0.718126 |
| 2020 | 0.687182 |
| 2019 | 0.641577 |
| 2018 | 0.592871 |
| 2017 | 0.545095 |
| 2016 | 0.488971 |
| 2015 | 0.437328 |
| 2014 | 0.401072 |
| 2013 | 0.372802 |
| 2012 | 0.350609 |
| 2011 | 0.339759 |
| 2010 | 0.332657 |
| 2009 | 0.307398 |
| 2008 | 0.277504 |
| 2007 | 0.252745 |
| 2006 | 0.231288 |
| 2005 | 0.210025 |
| 2004 | 0.193294 |
| 2003 | 0.186294 |
| 2002 | 0.176165 |
| 2001 | 0.164439 |
| 2000 | 0.159636 |
| 1999 | 0.167559 |
| 1998 | 0.179563 |
| 1997 | 0.197351 |
| 1996 | 0.218406 |
| 1995 | 0.228723 |
| 1994 | 0.220849 |
| 1993 | 0.208798 |
| 1992 | 0.200975 |
| 1991 | 0.177602 |
| 1990 | 0.158256 |
| 1989 | 0.15092 |
| 1988 | 0.147664 |
| 1987 | 0.148628 |
| 1986 | 0.14713 |
| 1985 | 0.14803 |
| 1984 | 0.155162 |
| 1983 | 0.170541 |
| 1982 | 0.176042 |
| 1981 | 0.176619 |
| 1980 | 0.178243 |
| 1979 | 0.184864 |
| 1978 | 0.200247 |
| 1977 | 0.20402 |
| 1976 | 0.214264 |
| 1975 | 0.225225 |
| 1974 | 0.230843 |
| 1973 | 0.224307 |
| 1972 | 0.2118 |
| 1971 | 0.223521 |
| 1970 | 0.240848 |
| 1969 | 0.256892 |
| 1968 | 0.274829 |
| 1967 | 0.259981 |
| 1966 | 0.254477 |
| 1965 | 0.272825 |
| 1964 | 0.282201 |
| 1963 | 0.271003 |
| 1962 | 0.215657 |
| 1961 | 0.189352 |
| 1960 | 0.183423 |