| Date - Field | Tonga - Geography - note |
2008 January Geography - note | archipelago of 169 islands (36 inhabited) |
2007 January Geography - note | archipelago of 169 islands (36 inhabited) |
2006 January Geography - note | archipelago of 169 islands (36 inhabited) |
2005 January Geography - note | archipelago of 169 islands (36 inhabited) |
2004 January Geography - note | archipelago of 169 islands (36 inhabited) |
2003 January Geography - note | archipelago of 169 islands (36 inhabited) |
2002 January Geography - note | archipelago of 169 islands (36 inhabited) |
2001 January Geography - note | archipelago of 170 islands (36 inhabited) |
2000 January Geography - note | archipelago of 170 islands (36 inhabited) |