{
  "industry": "Administrative & Support Services",
  "naics": "561",
  "metro": "St. Louis, MO-IL",
  "grain_of_margin": "national",
  "national_net_margin_pct": 21.2,
  "metro_establishments": 3485.0,
  "metro_employment": 69868.0,
  "metro_avg_weekly_wage": null,
  "note": "Margin is national. Counts + wage are metro (CBSA) grain. No local margin exists."
}