V3: Line with reversed value axis

HTML

<script src="http://www.amcharts.com/lib/3/amcharts.js"></script>
<script src="http://www.amcharts.com/lib/3/serial.js"></script>
<div id="chartdiv" style="width: 100%; height: 362px;"></div>

JavaScript

var chart;

var chartData = [
    {
        "year": 1930,
        "italy": 1,
        "germany": 5,
        "uk": 3
    },
    {
        "year": 1934,
        "italy": 1,
        "germany": 2,
        "uk": 6
    },
    {
        "year": 1938,
        "italy": 2,
        "germany": 3,
        "uk": 1
    },
    {
        "year": 1950,
        "italy": 3,
        "germany": 4,
        "uk": 1
    },
    {
        "year": 1954,
        "italy": 5,
        "germany": 1,
        "uk": 2
    },
    {
        "year": 1958,
        "italy": 3,
        "germany": 2,
        "uk": 1
    },
    {
        "year": 1962,
        "italy": 1,
        "germany": 2,
        "uk": 3
    },
    {
        "year": 1966,
        "italy": 2,
        "germany": 1,
        "uk": 5
    },
    {
        "year": 1970,
        "italy": 3,
        "germany": 5,
        "uk": 2
    },
    {
        "year": 1974,
        "italy": 4,
        "germany": 3,
        "uk": 6
    },
    {
        "year": 1978,
        "italy": 1,
        "germany": 2,
        "uk": 4
    }
];


AmCharts.ready(function () {
    // SERIAL CHART
    chart = new AmCharts.AmSerialChart();
    chart.dataProvider = chartData;
    chart.categoryField = "year";
    chart.startDuration = 0.5;
    chart.balloon.color = "#000000";
    
    // AXES
    // category
    var categoryAxis = chart.categoryAxis;
    categoryAxis.fillAlpha = 1;
    categoryAxis.fillColor = "#FAFAFA";
    categoryAxis.gridAlpha = 0;
    categoryAxis.axisAlpha = 0;
    categoryAxis.gridPosition = "start";
    categoryAxis.position = "top";
    
    // value
    var valueAxis = new AmCharts.ValueAxis();
    valueAxis.title = "Place taken";
    valueAxis.dashLength = 5;
    valueAxis.axisAlpha = 0;
    valueAxis.minimum = 1;
    valueAxis.maximum = 6;
    valueAxis.integersOnly = true;
    valueAxis.gridCount = 10;
    valueAxis.reversed = true; // this line makes the value axis reversed
    valueAxis.title = 'hahaha';
    chart.addValueAxis(valueAxis);
   ...