See also>Emigrant stockFertilityMortalityLife expectancyLiteracy rateTonga - Human Development IndexDateHDIHDI Ranking20010.68879º20000.68573º19990.68863º19980.68564º19970.68064º19960.67864º19950.67662º19940.67260º19930.66362º19920.65665º19910.65264º19900.64568ºTonga - Human Development Index Sources: UN