[
  {
    "year": 2015,
    "health_index": 85.5,
    "gas_index": 92.9,
    "total_index": 87.4
  },
  {
    "year": 2016,
    "health_index": 89.1,
    "gas_index": 82.9,
    "total_index": 89.7
  },
  {
    "year": 2017,
    "health_index": 91.8,
    "gas_index": 93,
    "total_index": 93.1
  },
  {
    "year": 2018,
    "health_index": 95.3,
    "gas_index": 104.6,
    "total_index": 97
  },
  {
    "year": 2019,
    "health_index": 100,
    "gas_index": 100,
    "total_index": 100
  },
  {
    "year": 2020,
    "health_index": 94.8,
    "gas_index": 73,
    "total_index": 98.2
  },
  {
    "year": 2021,
    "health_index": 106.3,
    "gas_index": 108.9,
    "total_index": 111
  },
  {
    "year": 2022,
    "health_index": 112.7,
    "gas_index": 144.4,
    "total_index": 121
  },
  {
    "year": 2023,
    "health_index": 121.5,
    "gas_index": 129.4,
    "total_index": 127.5
  },
  {
    "year": 2024,
    "health_index": 130.7,
    "gas_index": 121.7,
    "total_index": 133.4
  },
  {
    "year": 2025,
    "health_index": 139.5,
    "gas_index": 114.8,
    "total_index": 139.7
  }
]