{"entity":{"iso2":"UK","iso3":"GBR","name":"United Kingdom of Great Britain and Northern Ireland","slug":"united-kingdom"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"period-average-age-of-mothers-birth-order","source":"Human Fertility Database (2025) \u2013 processed by Our World in Data","source_url":"https://ourworldindata.org/grapher/period-average-age-of-mothers-birth-order","title":"Average age of mothers at childbirth by birth order","unit":"years"},"observations":[{"date":"2013-01-01","value":28.33},{"date":"2014-01-01","value":28.55},{"date":"2015-01-01","value":28.65},{"date":"2016-01-01","value":28.81},{"date":"2017-01-01","value":28.87},{"date":"2018-01-01","value":28.95},{"date":"2019-01-01","value":28.99},{"date":"2020-01-01","value":29.12},{"date":"2021-01-01","value":29.33},{"date":"2022-01-01","value":29.24}],"summary":{"latest_period":"2022-01-01","latest_value":29.24,"max":29.33,"mean":28.884,"min":28.33,"of":33,"rank":18,"trend":"flat"}}