{
  "GTB_ID__Full": {
    "metadata": "Version history, updated for each publishing.",
    "fields": [
      {
        "NAME": "GTB ID Database (2013 – 2015)",
        "VERSION": "1",
        "DATE": "2016-03-04",
        "CHANGES": "Original version"
      },
      {
        "NAME": "GTB ID Database (2013 – 2016)",
        "VERSION": "1",
        "DATE": "2017-06-30",
        "CHANGES": "Original version"
      },
      {
        "NAME": "GTB ID Database (2013 – 2017)",
        "VERSION": "1",
        "DATE": "2018-04-30",
        "CHANGES": "Original version"
      },
      {
        "NAME": "GTB ID Database (2013 – 2019)",
        "VERSION": "1",
        "DATE": "2020-08-27",
        "CHANGES": "Original version"
      },
      {
        "NAME": "GTB ID Database (2013 – 2020)",
        "VERSION": "1",
        "DATE": "2021-02-04",
        "CHANGES": "Original version"
      },
      {
        "NAME": "GTB ID Database (2013 – 2020)",
        "VERSION": "2",
        "DATE": "2021-05-26",
        "CHANGES": "Schedules 1 to 10 added"
      },
      {
        "NAME": "GTB ID Database (2013 – 2021)",
        "VERSION": "1",
        "DATE": "2022-06-29",
        "CHANGES": "Original version"
      },
      {
        "NAME": "GTB ID Database (2013 – 2022)",
        "VERSION": "1",
        "DATE": "2023-06-29",
        "CHANGES": "Original version"
      },
      {
        "NAME": "GTB ID Database (2013 – 2023)",
        "VERSION": "1",
        "DATE": "2024-06-29",
        "CHANGES": "Original version"
      },
      {
        "NAME": "GTB ID Database (2013 – 2024)",
        "VERSION": "1",
        "DATE": "2025-05-01",
        "CHANGES": "Original version"
      },
      {
        "NAME": "GDB ID Dataset (2013-2025)",
        "VERSION": "2026.06.v1",
        "DATE": "2026-06-25",
        "CHANGES": "Updated with 2025 year beginning and year end from new templates. Updated with restatement of GasNet 2023 and 2024 year end data (VERSION = 2026.01.v2). Cleanup of historic data labels. In Network column changed to 'All' instead of blank for non-subnetworks. Changed publishing format to multiple output formats with data dictionary and version history in separate files. Added VERSION, SECT_NO columns. Column name changes: all uppercase, 'Schedule_reference' renamed to 'SCH_REF', 'Sub-category' to 'SUB_CATEGORY' and 'Disclosure year' to 'DISC_YR' to match other sectors."
      }
    ]
  }
}