Highcharts.chart('container', {

    chart: {
        type: 'bubble',
        plotBorderWidth: 1
    },

    title: {
        text: 'Highcharts Bubbles'
    },

    subtitle: {
        text: 'The <em>zMin</em> and <em>zMax</em> options are set to 0 and 100, bubbles should not become near the <em>maxSize</em>'
    },

    xAxis: {
        gridLineWidth: 1
    },

    yAxis: {
        startOnTick: false,
        endOnTick: false
    },

    plotOptions: {
        bubble: {
            minSize: 3,
            maxSize: 50,
            zMin: 0,
            zMax: 100
        }
    },

    series: [{
        data: [
            [9, 81, 6],
            [98, 5, 19],
            [51, 50, 13],
            [41, 22, 14],
            [58, 24, 20],
            [78, 37, 4],
            [55, 56, 13]
        ]
    }]

});