{
  "1": {
    "value": "Primary sector",
    "children": {
      "11": {
        "value": "Agriculture",
        "children": {
          "111": "Agriculture (excluding fallow land and kitchen gardens)",
          "112": "Fallow land"
        }
      },
      "12": "Forestry",
      "13": "Aquaculture and fishing",
      "14": "Mining and quarrying",
      "15": "Other primary production"
    }
  },
  "2": {
    "value": "Secondary sector",
    "children": {
      "21": "Energy production",
      "22": {
        "value": "Industry and manufacturing",
        "children": {
          "221": "Manufacturing of food, beverages and tobacco products",
          "222": "Manufacturing of textile products",
          "223": "Coal, oil and metal processing",
          "224": "Production of non-metal mineral goods",
          "225": "Chemical and allied industries and manufacturing",
          "226": "Machinery and equipment",
          "227": "Wood based products",
          "228": "Printing and reproduction"
        }
      }
    }
  },
  "3": {
    "value": "Tertiary sector, transport, utilities & residential",
    "children": {
      "31": {
        "value": "Transport, communication networks, storage, protection works",
        "children": {
          "311": "Railway transport",
          "312": "Road transport",
          "313": "Water transport",
          "314": "Air transport",
          "315": "Transport via pipelines",
          "316": "Telecommunication",
          "317": "Logistics and storage",
          "318": "Protection infrastructures",
          "319": "Electricity, gas and thermal power distribution"
        }
      },
      "32": {
        "value": "Water and waste treatment",
        "children": {
          "321": "Water supply and treatment",
          "322": "Waste treatment"
        }
      },
      "33": "Construction",
      "34": {
        "value": "Commerce, financial, professional and information services",
        "children": {
          "341": "Commerce",
          "342": "Financial, professional and information services"
        }
      },
      "35": "Community services",
      "36": {
        "value": "Recreation, leisure, sport",
        "children": {
          "361": "Amenities, museums, leisure",
          "362": "Sport"
        }
      },
      "37": "Residential"
    }
  },
  "4": {
    "value": "Unused and abandoned areas",
    "children": {
      "41": {
        "value": "Abandoned areas",
        "children": {
          "411": "Abandoned industrial areas",
          "412": "Abandoned commercial areas",
          "413": "Abandoned transport areas",
          "414": "Abandoned residential areas",
          "415": "Other abandoned areas"
        }
      },
      "42": "Semi-natural and natural areas not in use"
    }
  }
}