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Administrative divisions
Tonga — 36 years of data
Historical Values
| Year | Value |
|---|---|
| 1990 | three island groups; Haapai, Tongatapu, Vavau |
| 1991 | three island groups; Haapai, Tongatapu, Vavau |
| 1992 | three island groups; Ha`apai, Tongatapu, Vava`u |
| 1993 | three island groups; Ha'apai, Tongatapu, Vava'u |
| 1994 | three island groups; Ha'apai, Tongatapu, Vava'u |
| 1995 | three island groups; Ha'apai, Tongatapu, Vava'u |
| 1996 | three island groups; Ha'apai, Tongatapu, Vava'u |
| 1997 | three island groups; Ha'apai, Tongatapu, Vava'u |
| 1998 | three island groups; Ha'apai, Tongatapu, Vava'u |
| 1999 | three island groups; Ha'apai, Tongatapu, Vava'u |
| 2000 | three island groups; Ha'apai, Tongatapu, Vava'u |
| 2001 | 3 island groups; Ha'apai, Tongatapu, Vava'u |
| 2002 | 3 island groups; Ha'apai, Tongatapu, Vava'u |
| 2003 | 3 island groups; Ha'apai, Tongatapu, Vava'u |
| 2004 | 3 island groups; Ha'apai, Tongatapu, Vava'u |
| 2005 | 3 island groups; Ha'apai, Tongatapu, Vava'u |
| 2006 | 3 island groups; Ha'apai, Tongatapu, Vava'u |
| 2007 | 3 island groups; Ha'apai, Tongatapu, Vava'u |
| 2008 | 3 island groups; Ha'apai, Tongatapu, Vava'u |
| 2009 | 3 island groups; Ha'apai, Tongatapu, Vava'u |
| 2010 | 3 island groups; Ha'apai, Tongatapu, Vava'u |
| 2011 | 3 island groups; Ha'apai, Tongatapu, Vava'u |
| 2012 | 3 island groups; Ha'apai, Tongatapu, Vava'u |
| 2013 | 5 island divisions; 'Eua, Ha'apai, Ongo Niua, Tongatapu, Vava'u |
| 2014 | 5 island divisions; 'Eua, Ha'apai, Ongo Niua, Tongatapu, Vava'u |
| 2015 | 5 island divisions; 'Eua, Ha'apai, Ongo Niua, Tongatapu, Vava'u |
| 2016 | 5 island divisions; 'Eua, Ha'apai, Ongo Niua, Tongatapu, Vava'u |
| 2017 | 5 island divisions; 'Eua, Ha'apai, Ongo Niua, Tongatapu, Vava'u |
| 2018 | 5 island divisions; 'Eua, Ha'apai, Ongo Niua, Tongatapu, Vava'u |
| 2019 | 5 island divisions; 'Eua, Ha'apai, Ongo Niua, Tongatapu, Vava'u |
| 2020 | 5 island divisions; 'Eua, Ha'apai, Ongo Niua, Tongatapu, Vava'u |
| 2021 | 5 island divisions; 'Eua, Ha'apai, Ongo Niua, Tongatapu, Vava'u |
| 2022 | 5 island divisions; 'Eua, Ha'apai, Ongo Niua, Tongatapu, Vava'u |
| 2023 | 5 island divisions; 'Eua, Ha'apai, Ongo Niua, Tongatapu, Vava'u |
| 2024 | 5 island divisions; 'Eua, Ha'apai, Ongo Niua, Tongatapu, Vava'u |
| 2025 | 5 island divisions; 'Eua, Ha'apai, Ongo Niua, Tongatapu, Vava'u |