{
  "version": "unwpp2024-wdi2023-v2",
  "retrievedAt": "2026-10-21T09:20:36.601735+00:00",
  "birthReferenceYear": 2023,
  "mortalityReferenceYear": 2023,
  "countryCount": 216,
  "coveredBirths": 131559556,
  "worldBirths": 131696730,
  "coverage": 0.9989584102515239,
  "excludedCountryCodes": [
    "CHI"
  ],
  "method": "Birth weight = WDI population \u00d7 crude birth rate / 1000. UN WPP 2024 single-age qx estimates for 2023 are used directly for ages 0\u201399. Ages 100\u2013120 use a Gompertz tail fitted to ages 90 and 99, with slope constrained to 0.025\u20130.18. This tail is a game model, not published UN single-age estimates. Missing sex ratio uses 1.05 and is flagged; GDP is only an economic scale, not personal income or wealth. Maternal age group is weighted by WPP 2023 births (not ASFR); integer age is uniform within the five-year group. Missing areas use the pooled covered-area distribution and are flagged. Paternal age is a fictional maternal-age + 2\u20136 years, minimum 18, and is not a sourced paternal-age distribution. Family resource bands are fictional, equally weighted game categories.",
  "sources": {
    "countries": {
      "url": "https://api.worldbank.org/v2/country?format=json&per_page=400",
      "sha256": "c9acf3932785191a649cbc04c3056af4cf64a236e5c3b49d49be25ddb0440bce"
    },
    "population": {
      "url": "https://api.worldbank.org/v2/country/all/indicator/SP.POP.TOTL?date=2023&format=json&per_page=400",
      "sha256": "27398dc2f2947c58ab01bcc7e81941911d14b4b104da2c233b8d46b3e4a4f74e"
    },
    "birthRate": {
      "url": "https://api.worldbank.org/v2/country/all/indicator/SP.DYN.CBRT.IN?date=2023&format=json&per_page=400",
      "sha256": "c5e274abe13290c850031415e4cb00697fe3709e66ab766d10830bd7a70adcae"
    },
    "sexRatio": {
      "url": "https://api.worldbank.org/v2/country/all/indicator/SP.POP.BRTH.MF?date=2023&format=json&per_page=400",
      "sha256": "ce6fe1f2d2d52dde5ac614a935dada8be717078ed6b7e1601b00d41f0b24c7c6"
    },
    "gdp": {
      "url": "https://api.worldbank.org/v2/country/all/indicator/NY.GDP.PCAP.CD?date=2023&format=json&per_page=400",
      "sha256": "97bb3fed315ff8fa4b4390ff9d0e32262cba8d4b9bafb7d203183c12f519944d"
    },
    "mortality": {
      "url": "https://population.un.org/wpp/downloads",
      "sha256": "857ce5ef266a5f096609e2a6a61454b5982d8dd8f649acab993856a2ccced27d",
      "extractSources": {
        "female": {
          "url": "https://population.un.org/wpp/assets/Excel%20Files/1_Indicator%20%28Standard%29/CSV_FILES/WPP2024_Life_Table_Complete_Medium_Female_1950-2023.csv.gz",
          "sourceSha256": "0e23ba8cc2daabd9aa40839b02e21917205f29ea45791c2b1a87bd42705b1458",
          "referenceYear": 2023
        },
        "male": {
          "url": "https://population.un.org/wpp/assets/Excel%20Files/1_Indicator%20%28Standard%29/CSV_FILES/WPP2024_Life_Table_Complete_Medium_Male_1950-2023.csv.gz",
          "sourceSha256": "e304a776352e5899ff45a1e0c059bdbaa32e8a8249d36d8f4627b2afaf6358be",
          "referenceYear": 2023
        }
      },
      "license": "CC BY 3.0 IGO",
      "licenseUrl": "https://population.un.org/dataportalapi/index.html",
      "attribution": "United Nations, Department of Economic and Social Affairs, Population Division (2024). World Population Prospects 2024, Online Edition."
    },
    "maternalAges": {
      "url": "https://population.un.org/wpp/assets/Excel%20Files/1_Indicator%20%28Standard%29/CSV_FILES/WPP2024_Fertility_by_Age5.csv.gz",
      "sourceSha256": "c0d3b5b7e992902df3be1980cfa86c440c1cd673ecec9d4826142a03aece04ec",
      "extractSha256": "ba199fcc01698dab4446ef5268dd7c2de50873a5ca65c55b86f8846cfd51be23",
      "license": "CC BY 3.0 IGO",
      "referenceYear": 2023
    },
    "worldBankLicense": {
      "url": "https://datacatalog.worldbank.org/public-licenses",
      "license": "CC BY 4.0 with World Bank additional terms",
      "attribution": "World Bank, World Development Indicators, 2023 reference data, retrieved 2026-10-21."
    }
  },
  "maternalAgeFallbackCountries": [],
  "historicalData": {
    "version": "unwpp2024-history-1",
    "manifest": "/data/another-life-history-manifest.json",
    "years": [
      1950,
      1960,
      1970,
      1980,
      1990,
      2000,
      2010,
      2019,
      2020,
      2021,
      2022,
      2023
    ],
    "beforeCoverage": "1950 proxy, explicitly labelled"
  },
  "historicalEvents": {
    "version": "historical-context-1",
    "registry": "/data/another-life-events.json",
    "sha256": "d987b4443a18bc25423ca4c002bbd64ff6dbd607aa5c0a32494e36fd1a84eafe"
  }
}