ViewSet for Statistic.

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

[
    {
        "id": 1,
        "total_escrows": 129,
        "total_coins": 5100573,
        "total_transactions": 103710,
        "weighted_rate": 131,
        "last_rate": 137,
        "max_supply": 1032628343,
        "circulating_supply": 39954607,
        "updated_at": "2022-04-10T03:50:15.276812Z"
    }
]