public function customers_vs_guests() {

		$customer_order_totals = $this->get_order_report_data(
			array(
				'data'         => array(
					'ID' => array(
						'type'     => 'post_data',
						'function' => 'COUNT',
						'name'     => 'total_orders',
					),
				),
				'where_meta'   => array(
					array(
						'meta_key'   => '_customer_user',
						'meta_value' => '0',
						'operator'   => '>',
					),
				),
				'filter_range' => true,
			)
		);

		$guest_order_totals = $this->get_order_report_data(
			array(
				'data'         => array(
					'ID' => array(
						'type'     => 'post_data',
						'function' => 'COUNT',
						'name'     => 'total_orders',
					),
				),
				'where_meta'   => array(
					array(
						'meta_key'   => '_customer_user',
						'meta_value' => '0',
						'operator'   => '=',
					),
				),
				'filter_range' => true,
			)
		);
		?>
		<div class="chart-container">
			<div class="chart-placeholder customers_vs_guests pie-chart" style="height:200px"></div>
			<ul class="pie-chart-legend">
				<li style="border-color: <?php echo esc_attr( $this->chart_colours['customers'] ); ?>"><?php esc_html_e( 'Customer sales', 'woocommerce' ); ?></li>
				<li style="border-color: <?php echo esc_attr( $this->chart_colours['guests'] ); ?>"><?php esc_html_e( 'Guest sales', 'woocommerce' ); ?></li>
			</ul>
		</div>
		<script type="text/javascript">
			jQuery(function(){
				 jQuery.plot(
					jQuery('.chart-placeholder.customers_vs_guests'),
					[
						{
							label: '<?php esc_html_e( 'Customer orders', 'woocommerce' ); ?>',
							data:  "<?php echo esc_html( $customer_order_totals->total_orders ); ?>",
							color: '<?php echo esc_html( $this->chart_colours['customers'] ); ?>'
						},
						{
							label: '<?php esc_html_e( 'Guest orders', 'woocommerce' ); ?>',
							data:  "<?php echo esc_html( $guest_order_totals->total_orders ); ?>",
							color: '<?php echo esc_html( $this->chart_colours['guests'] ); ?>'
						}
					],
					{
						grid: {
							hoverable: true
						},
						series: {
							pie: {
								show: true,
								radius: 1,
								innerRadius: 0.6,
								label: {
									show: false
								}
							},
							enable_tooltip: true,
							append_tooltip: "<?php echo esc_html( ' ' . __( 'orders', 'woocommerce' ) ); ?>",
						},
						legend: {
							show: false
						}
					}
				);

				jQuery('.chart-placeholder.customers_vs_guests').resize();
			});
		</script>
		<?php
	}