Overlap values on MarkerText

Hello experts,

I have a graph type line_vert_abs, and i use markerdisplayed

<MarkerText visible="true" markerTextPlace="MTP_OUTSIDE_MAX"></MarkerText>

But in some cases values overlap.

I attached a picture of my problem, you have a trick. I would only take one in the case of overlap.

Thanks !!

 

This is my code:

<Graph seriesEffect="SE_NONE" graphType="LINE_VERT_ABS" markerDisplayed="true"><MarkerText visible="true" markerTextPlace="MTP_OUTSIDE_MAX"></MarkerText><DataMarker markerSize="20" /><LegendArea visible="true" automaticPlacement="AP_NEVER" position="LAP_BOTTOM" /><Title text="€/Tm" visible="true" horizontalAlignment="CENTER" /><LegendText><GraphFont size="9" bold="false" italic="false" underline="false" /></LegendText><SeriesItems><Series id="0" color="#0101DF" lineWidth="2" markerShape="MS_CIRCLE" /><Series id="1" color="#8A0808" lineWidth="2" markerShape="MS_CIRCLE" /><Series id="2" color="#6E6E6E" lineWidth="2" markerShape="MS_CIRCLE" /><Series id="3" color="#0B3B0B" lineWidth="2" markerShape="MS_CIRCLE" /></SeriesItems><Y1Axis><ViewFormat numberType="NUMTYPE_GENERAL" numberTypeUsed="true" decimalDigit="0" decimalSeparatorUsed="true" decimalDigitUsed="true" scaleFactor="SCALEFACTOR_NONE" scaleFactorUsed="true" /></Y1Axis><LocalGridData colCount="{count(xdoxslt:group(current-group(),  'MES'))}" rowCount="{count(xdoxslt:group(current-group(),  'RP001_GROUP'))}"><RowLabels><xsl:for-each-group select="current-group()" group-by="RP001_GROUP" xmlns:xsl="