It's pretty straight forward. Just create an array in PHP with the same leves and keys:
$data = [ '2016' => [ [ "date" => "2016/01/01", "close" => 837 ], [ "date" => "2016/12/01", "close" => 769 ], ], '2015' => [ [ "date" => "2015/01/01", "close" => 637 ], [ "date" => "2015/12/01", "close" => 669 ], ], // ... and so on ];
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