Showing only selective category axis labels

by amcharts

HTML

<script type="text/javascript" src="http://www.amcharts.com/lib/3/amcharts.js"></script>
<script type="text/javascript" src="http://www.amcharts.com/lib/3/serial.js"></script>
<script type="text/javascript" src="http://www.amcharts.com/lib/3/themes/none.js"></script>
<div id="chartdiv"></div>

CSS

#chartdiv {
	width	: 100%;
	height	: 300px;
}

JavaScript

AmCharts.ready(function () {
var chartData = [{SaleEffectiveDate:'2009-01-03' , MaxAmt: 42002.8, NetTotalValue: 32386.7},{SaleEffectiveDate:'2009-01-04' , MaxAmt: 42385.7, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-05' , MaxAmt: 43467.1, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-06' , MaxAmt: 43466.6, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-07' , MaxAmt: 43466.1, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-08' , MaxAmt: 43380.3, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-09' , MaxAmt: 43307.5, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-10' , MaxAmt: 42417.3, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-11' , MaxAmt: 42137.7, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-12' , MaxAmt: 42044.4, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-13' , MaxAmt: 42044.4, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-14' , MaxAmt: 42043.8, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-15' , MaxAmt: 41929.9, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-16' , MaxAmt: 41706.2, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-17' , MaxAmt: 40372.2, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-18' , MaxAmt: 40123.9, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-19' , MaxAmt: 40477.6, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-20' , MaxAmt: 40475.9, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-21' , MaxAmt: 40475.0, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-22' , MaxAmt: 40435.3, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-23' , MaxAmt: 40084.3, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-24' , MaxAmt: 40248.1, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-25' , MaxAmt: 39943.5, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-26' , MaxAmt: 39937.0, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-27' , MaxAmt: 39936.4, NetTotalValue: 32789.1},{SaleEffectiveDate:'2009-01-28' , MaxAmt: 39935.9, NetTotalValue:...