{
  "id-zmienna": 589,
  "nazwa": "Total fertility rate",
  "nazwa-skrocona": "Total fertility rate",
  "tagi": [
    {
      "id-tag": 711,
      "nazwa-tag": "fertility"
    },
    {
      "id-tag": 730,
      "nazwa-tag": "fertility"
    },
    {
      "id-tag": 853,
      "nazwa-tag": "rate"
    }
  ],
  "pojecia": [
    {
      "id-pojecie": 3950,
      "nazwa-pojecie": "Total fertility rate",
      "definicja": "<p>\n\tMeans the number of children that would be born on average by a woman during her whole reproductive period (15–49 years), assuming that in particular phases of this period she would give birth to children with the intensity observed in a given year, i.e. the age-specific fertility rates are treated as constant.</p>\n",
      "uwagi": "<p>\n\tTotal fertility rate is calculated based on sum of the age-specific fertility rates.</p>\n",
      "data-poczatku-pojecie": "2018-01-01",
      "data-konca-pojecie": "9999-12-31"
    }
  ],
  "wyjasnienia-metodologiczne": {
    "notki": []
  },
  "przekroje": [
    {
      "id-przekroj": 155,
      "nazwa-przekroj": "Poland, voivodships, powiats; Type of locality",
      "szereg-czasowy": "2000 - 2025",
      "id-czestotliwosc": 1,
      "nazwa-czestotliwosc": "Year",
      "aktualizacja-ostatnia": "2026-07-06",
      "aktualizacja-kolejna": "2027-06-30"
    },
    {
      "id-przekroj": 429,
      "nazwa-przekroj": "Poland, macroregions, regions, subregions; Type of locality",
      "szereg-czasowy": "2000 - 2025",
      "id-czestotliwosc": 1,
      "nazwa-czestotliwosc": "Year",
      "aktualizacja-ostatnia": "2026-07-06",
      "aktualizacja-kolejna": "2027-06-30"
    }
  ],
  "zestawy": [
    {
      "id-zestaw": 639,
      "nazwa-zestaw": "Register of civil status",
      "id-gestor": 754,
      "nazwa-gestor": "Ministry of Digital Affairs "
    }
  ],
  "badania": [
    {
      "id-badanie": 35,
      "symbol-badanie": "1.21.01",
      "temat-badanie": "Births. Fertility"
    },
    {
      "id-badanie": 40,
      "symbol-badanie": "1.21.07",
      "temat-badanie": "Balance of the state and structure of the population based on demographic characteristics"
    }
  ],
  "akty-prawne": [
    {}
  ],
  "jednostki": [
    {
      "id-jednostka": 593,
      "nazwa-jednostki": "Demographic Research Department"
    }
  ]
}