joins2

    {
      "_id": 1995,
      "higestPrice": 1000000,
      "lowestPrice": 12000,
      "averagePrice": 114059.35206869633,
      "priceStdDev": 81540.50490801703
    },

...

    {
      "_id": 2015,
      "higestPrice": 1688000,
      "lowestPrice": 125000,
      "averagePrice": 451413.23917137476,
      "priceStdDev": 228293.6005201898
    }