public static function get_stats( $api_key ) {
    $stat_totals = array();

    foreach( array( '6-months', 'all' ) as $interval ) {
      $response = Akismet::http_post( Akismet::build_query( array( 'blog' => get_option( 'home' ), 'key' => $api_key, 'from' => $interval ) ), 'get-stats' );

      if ( ! empty( $response[1] ) ) {
        $stat_totals[$interval] = json_decode( $response[1] );
      }
    }

    return $stat_totals;
  }