KPI marker on YAxis

HTML

<script type="text/javascript" src="http://code.highcharts.com/highcharts.js"></script>

<div id="container" style="height: 300px"></div>

JavaScript

var chart = new Highcharts.Chart({

    chart: {
        renderTo: 'container'
    },

    xAxis: {
        categories: ['Ene', 'Feb', 'Mar', 'Abr', 'May', 'Jun', 'Jul', 'Ago', 'Sep', 'Oct', 'Nov', 'Dec']
    },

    series: [{
        data: [29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1, 95.6, 54.4]
    }]

}, function(chart) { // on complete
 
    chart.renderer.image('', 20, 50, 30, 30)
        .add();   
    
});