{"entity":{"iso2":"TO","iso3":"TON","name":"Tonga","slug":"tonga"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"period-average-age-of-mothers","source":"Human Fertility Database (2025); UN, World Population Prospects (2024) \u2013 processed by Our World in Data","source_url":"https://ourworldindata.org/grapher/period-average-age-of-mothers","title":"Average age of mothers at childbirth","unit":"years"},"observations":[{"date":"1950-01-01","value":30.404},{"date":"1951-01-01","value":30.413},{"date":"1952-01-01","value":30.422},{"date":"1953-01-01","value":30.432},{"date":"1954-01-01","value":30.442},{"date":"1955-01-01","value":30.459},{"date":"1956-01-01","value":30.475},{"date":"1957-01-01","value":30.492},{"date":"1958-01-01","value":30.51},{"date":"1959-01-01","value":30.528},{"date":"1960-01-01","value":30.546},{"date":"1961-01-01","value":30.562},{"date":"1962-01-01","value":30.579},{"date":"1963-01-01","value":30.59},{"date":"1964-01-01","value":30.601},{"date":"1965-01-01","value":30.599},{"date":"1966-01-01","value":30.596},{"date":"1967-01-01","value":30.593},{"date":"1968-01-01","value":30.583},{"date":"1969-01-01","value":30.575},{"date":"1970-01-01","value":30.566},{"date":"1971-01-01","value":30.556},{"date":"1972-01-01","value":30.546},{"date":"1973-01-01","value":30.522},{"date":"1974-01-01","value":30.496},{"date":"1975-01-01","value":30.498},{"date":"1976-01-01","value":30.498},{"date":"1977-01-01","value":30.501},{"date":"1978-01-01","value":30.502},{"date":"1979-01-01","value":30.507},{"date":"1980-01-01","value":30.536},{"date":"1981-01-01","value":30.565},{"date":"1982-01-01","value":30.594},{"date":"1983-01-01","value":30.624},{"date":"1984-01-01","value":30.654},{"date":"1985-01-01","value":30.705},{"date":"1986-01-01","value":30.748},{"date":"1987-01-01","value":30.796},{"date":"1988-01-01","value":30.836},{"date":"1989-01-01","value":30.873},{"date":"1990-01-01","value":30.911},{"date":"1991-01-01","value":30.942},{"date":"1992-01-01","value":30.982},{"date":"1993-01-01","value":31.02},{"date":"1994-01-01","value":31.04},{"date":"1995-01-01","value":31.025},{"date":"1996-01-01","value":30.974},{"date":"1997-01-01","value":30.947},{"date":"1998-01-01","value":30.934},{"date":"1999-01-01","value":30.83},{"date":"2000-01-01","value":30.857},{"date":"2001-01-01","value":30.86},{"date":"2002-01-01","value":30.881},{"date":"2003-01-01","value":30.837},{"date":"2004-01-01","value":30.759},{"date":"2005-01-01","value":30.694},{"date":"2006-01-01","value":30.628},{"date":"2007-01-01","value":30.528},{"date":"2008-01-01","value":30.44},{"date":"2009-01-01","value":30.355},{"date":"2010-01-01","value":30.259},{"date":"2011-01-01","value":30.218},{"date":"2012-01-01","value":30.179},{"date":"2013-01-01","value":30.14},{"date":"2014-01-01","value":30.09},{"date":"2015-01-01","value":30.049},{"date":"2016-01-01","value":30.001},{"date":"2017-01-01","value":29.964},{"date":"2018-01-01","value":29.953},{"date":"2019-01-01","value":29.947},{"date":"2020-01-01","value":29.945},{"date":"2021-01-01","value":29.941},{"date":"2022-01-01","value":29.942},{"date":"2023-01-01","value":29.945}],"summary":{"latest_period":"2023-01-01","latest_value":29.945,"max":31.04,"mean":30.5343,"min":29.941,"of":236,"rank":83,"trend":"flat"}}