$(document).ready(function() {
    Highcharts.chart('longterm_chart', {
        chart: {
            type: 'area'
        },

        title: {
            text: 'Estimated Worldwide Population Growth by Region'
        },

        subtitle: {
            text: 'Source: Wikipedia.org'
        },

        xAxis: {
            categories: ['1750', '1800', '1850', '1900', '1950', '1999', '2050'],
            tickmarkPlacement: 'on',
            title: {
                enabled: false
            }

        },

        yAxis: {
            title: {
                text: 'Billions'
            },

            labels: {
                    formatter: function() {
                    return this.value / 1000;

                }

            }

        },

        tooltip: {
            split: true,
            valueSuffix: ' millions'
        },

        plotOptions: {
            area: {
                stacking: 'normal',
                lineColor: '#666666',
                lineWidth: 1,
                marker: {
                    lineWidth: 1,
                    lineColor: '#666666'
                }
            
        },

        series: [{
            name: 'Asia',
            data: [502, 635, 809, 947, 1402, 3634, 5268]
        }, {
            name: 'Africa',
            data: [106, 107, 111, 133, 221, 767, 1766]
        }, {
            name: 'Europe',
            data: [163, 203, 276, 408, 547, 729, 628]
        }, {
            name: 'America',
            data: [18, 31, 54, 156, 339, 818, 1201]
        }, {
            name: 'Oceania',
            data: [2, 2, 2, 6, 13, 30, 46]
        }]
    }});
})