d3js-v4-egghead/data/data.json

[
  {
    "country": "United States",
    "population": 323050000,
    "expectancy": 78.94,
    "cost": 9024.21,
    "code": "US"
  },
  {
    "country": "Switzerland",
    "population": 8306200,
    "expectancy": 82.85,
    "cost": 6786.57,
    "code": "CH"
  },
  {
    "country": "Norway",
    "population": 5213985,
    "expectancy": 81.75,
    "cost": 6081,
    "code": "NO"
  },
  {
    "country": "France",
    "population": 66627602,
    "expectancy": 82.00,
    "cost": 4366.99,
    "code": "FR"
  }
]