ViewSet for Statistic.

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

{
    "count": 1,
    "next": null,
    "previous": null,
    "results": [
        {
            "id": 1,
            "total_escrows": 89,
            "total_coins": 3198905,
            "total_transactions": 64055,
            "weighted_rate": 193,
            "last_rate": 200,
            "max_supply": 1032628343,
            "circulating_supply": 39954607,
            "api_key": "57c3aa5f-9b97-42f1-b44e-7f40f6b2fdde",
            "updated_at": "2021-12-04T13:40:22.979894Z"
        }
    ]
}