Create EV Curves

I need a solution to creating a project full planned vs earned vs actual curve in BI-Publisher.  Specifically how do I eliminate the last value from just heading straight to the right See Attached.

This is the XSL Code behind the table

<Graph seriesEffect="SE_AUTO_GRADIENT" graphType="LINE_VERT_ABS"><LegendArea visible="true" /><SeriesItems><Series id="0" color="#004000" /><Series id="1" color="#800000" /><Series id="2" color="#000080" /></SeriesItems><LegendText><GraphFont size="9" bold="false" italic="false" underline="false" /></LegendText><Y1TickLabel><GraphFont size="9" bold="false" italic="false" underline="false" /></Y1TickLabel><O1TickLabel><GraphFont size="9" bold="false" italic="false" underline="false" /></O1TickLabel><LocalGridData colCount="{count(.//G_1) + 1}" rowCount="3"><RowLabels><Label>PLANNED HOURS</Label><Label>ACTUAL_HOURS</Label><Label>EARNED_HOURS</Label></RowLabels><ColLabels><xsl:for-each select=".//G_1" xmlns:xsl="