{
  "industry": "Truck Transportation",
  "naics": "484",
  "metro": "Tulsa, OK",
  "grain_of_margin": "national",
  "national_net_margin_pct": 10.1,
  "metro_establishments": 384.0,
  "metro_employment": 5269.0,
  "metro_avg_weekly_wage": null,
  "note": "Margin is national. Counts + wage are metro (CBSA) grain. No local margin exists."
}