Bubble data label inside

HTML

<script src="http://code.highcharts.com/highcharts.js"></script>
<script src="http://code.highcharts.com/highcharts-more.js"></script>
<script src="http://code.highcharts.com/modules/exporting.js"></script>
<div id="container" style="height: 400px; min-width: 310px; max-width: 600px; margin: 0 auto"></div>

JavaScript

$(function () {
    $('#container').highcharts({

        chart: {
            type: 'bubble',
            zoomType: 'xy'
        },

        title: {
            text: 'Highcharts Bubbles'
        },
        plotOptions: {
            series: {
                dataLabels: {

                    style: {
                        fontSize: 20,
                        color: 'red',
                        textShadow: 'none',
                    },
                    inside: false,
                    //align:'left',
                    //verticalAlign: 'top',
                    //verticalAlign: 'middle',
                    //verticalAlign: 'top',
                    y:-10,
                    overflow: false,
                    crop: false,
                    enabled: true

                }
            }
        },
        series: [{
            data: [
                [97, 36, 1],
                [94, 74, 20],
                [68, 76, 88],
                [64, 87, 56]
            ]
        }]

    });

});