Array
(
    [201711] => Array
        (
        )

    [201712] => Array
        (
        )

    [201801] => Array
        (
        )

    [201804] => Array
        (
        )

    [201805] => Array
        (
        )

    [201806] => Array
        (
        )

    [201903] => Array
        (
        )

    [201905] => Array
        (
        )

    [201907] => Array
        (
        )

)