{
  "industry": "Construction (all)",
  "naics": "23",
  "metro": "Detroit-Warren-Dearborn, MI",
  "grain_of_margin": "national",
  "national_net_margin_pct": 14.8,
  "metro_establishments": 8503.0,
  "metro_employment": 80913.0,
  "metro_avg_weekly_wage": 1722.0,
  "note": "Margin is national. Counts + wage are metro (CBSA) grain. No local margin exists."
}