{
  "series_id": "FEDFUNDS_12M_AVG_ANNUAL",
  "source": "derived",
  "shortName": "Fed Funds Rate (12M Avg)",
  "name": "Federal Funds Effective Rate (12M Avg)",
  "updateFrequency": "annual",
  "unit": "percent",
  "derivation": {
    "type": "annual_month_slice",
    "source": "FEDFUNDS_12M_AVG",
    "target_month": 12,
    "map_to_month": 1,
    "map_to_day": 1,
    "description": "12-month trailing average Federal Funds Rate taken at December of each year"
  }
}