Liczba komentarzy z ostatniego roku :700
array(2) {
  [0]=>
  array(2) {
    ["comment_approved"]=>
    string(1) "0"
    ["num_comments"]=>
    string(1) "2"
  }
  [1]=>
  array(2) {
    ["comment_approved"]=>
    string(1) "1"
    ["num_comments"]=>
    string(3) "913"
  }
}

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//foreach ($posts as $post) { // // Output comments etc here // //}