Highcharts.stockChart('container', {

    yAxis: {
        plotLines: [{
            value: 0.696,
            width: 1,
            color: 'green',
            dashStyle: 'dash',
            label: {
                text: 'Latest value',
                align: 'right',
                y: 12,
                x: 0
            }
        }]
    },

    rangeSelector: {
        selected: 1
    },

    series: [{
        name: 'USD to EUR',
        data: usdeur
    }]
});