{
 "source": "THRIVE Fleet Fuel Bill Index (base = first full week of Jan 2026) — thrivefleet.co.uk/data/fuel-bill-index",
 "terms": "https://www.thrivefleet.co.uk/data/terms",
 "methodology": "https://www.thrivefleet.co.uk/data/fuel-bill-index",
 "unit": "index (100 = base week)",
 "weeks": [
  {
   "week": "2026-08-24",
   "index": 109.4,
   "diesel_ppl": 182.82
  },
  {
   "week": "2026-08-17",
   "index": 108.6,
   "diesel_ppl": 181.38
  },
  {
   "week": "2026-08-10",
   "index": 108.9,
   "diesel_ppl": 181.97
  },
  {
   "week": "2026-08-03",
   "index": 107.2,
   "diesel_ppl": 179.19
  },
  {
   "week": "2026-07-27",
   "index": 104.1,
   "diesel_ppl": 173.97
  },
  {
   "week": "2026-07-20",
   "index": 100,
   "diesel_ppl": 167.08
  }
 ]
}