migration rate: -5.67 migrant(s)/1,000 population (1993 est.) Nationality: noun: Tongan(s) adjective: Tongan Ethnic divisions: black African Religions: Anglican, Roman Catholic, Church of Christ 3.8%, other 15.7% Languages: English (official) Literacy: age 15 and over can read and write (1990) total population: 51.98 years male: 70.61 years female: 72.73 years (1993 est.) Death rate: 19.57 deaths/1,000 population (1993 est.) Life expectancy at birth: total population: 57% male: 60% female: 60% Labor force: 1.641 million (1992 est.) Unemployment rate: 2% (1991) Imports: $11.7 billion (f.o.b., 1992 est.) commodities: petroleum, grain, coking coal, machinery and
steel