ViewSet for Statistic.

GET /statistics
HTTP 200 OK
Allow: GET, HEAD, OPTIONS
Content-Type: application/json
Vary: Accept

[
    {
        "id": 1,
        "total_escrows": 130,
        "total_coins": 5111155,
        "total_transactions": 103932,
        "weighted_rate": 133,
        "last_rate": 210,
        "max_supply": 1032628343,
        "circulating_supply": 39954607,
        "updated_at": "2022-07-21T02:13:43.149336Z"
    }
]