XSL-Beginner-Problem

Hi all,

I am new to XSL and I am experimenting around... I've got an XML-File 
with the following structure
<energyreport>

<energyconsumption year="1970">
   <terajoule energy="Oil">2222</terajoule>
   <terajoule energy="Gaz">3333</terajoule>
   <terajoule energy="Coal">4444</terajoule>
</energyconsumption>

<energyconsumption year="1980">
   <terajoule energy="Oil">9222</terajoule>
   <terajoule energy="Gaz">9333</terajoule>
   <terajoule energy="Coal">9444</terajoule>
</energyconsumption>

[and so on...]

</energyreport>

I want to get out following structure, as simple text output (it is for 
a LaTeX-File):

1970
1980
Oil
2222
9222
Gaz
3333
9333
Coal
4444
9444


How to make that work? I tried this:

<xsl:template match="/">
  <xsl:for-each select="/energyreport/energyconsumption">
     <xsl:value-of select="@year"/>
 </xsl:for-each>
</xsl:template>

That gives out the years, that's fine... but how to select the 
energy-attribute (only once each)?
Every advice apreciated

Thanks in advance

Sorin Marti


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