{
  "series_id": "UNRATE_12M_AVG_ANNUAL",
  "source": "derived",
  "shortName": "US Economy (12M Avg)",
  "name": "Unemployment Rate US Economy (12M Avg)",
  "updateFrequency": "annual",
  "unit": "percent",
  "derivation": {
    "type": "annual_month_slice",
    "source": "UNRATE_12M_AVG",
    "target_month": 12,
    "map_to_month": 1,
    "map_to_day": 1,
    "description": "12-month trailing average unemployment rate taken at December of each year"
  }
}