problem with preceding axis

Could anybody tell me how to solve this problem. My
problem is that I use
[not(@ID=preceding::Document/@ID)] which protects the
next Documents, having same ID, to be displayed but I
can't avoid writing [not(@ID=preceding::Document/@ID)]
also.

XML is:

	 <Item Type="Annual" ID="2701">
    <Title><![CDATA[Item 2.2 title]]></Title>
		<Attr ID="1">
			<Name>X</Name>
			<Year Value="1999">
				<Document ID="1" Title="Doc 1">
					<Value>Doc 1 Value of Year 1999 attr X</Value>
				</Document>
				<Document ID="2" Title="Doc 2">
					<Value>Doc 2 Value of Year 1999 attr X</Value>
				</Document>
			</Year>
			<Year Value="2000">
				<Document ID="1" Title="Doc 1">
					<Value>Doc 1 Value of Year 2000 attr X</Value>
				</Document>
				<Document ID="2" Title="Doc 2">
					<Value>Doc 2 Value of Year 2000 attr X</Value>
				</Document>
			</Year>
		</Attr>
		<Attr ID="2">
			<Name>Y</Name>
			<Year Value="1999">
				<Document ID="1" Title="Doc 1">
					<Value>Doc 1 Value of Year 1999 attr Y</Value>
				</Document>
				<Document ID="2" Title="Doc 2">
					<Value>Doc 2 Value of Year 1999 attr Y</Value>
				</Document>
			</Year>
			<Year Value="2000">
				<Document ID="1" Title="Doc 1">
					<Value>Doc 1 Value of Year 2000 attr Y</Value>
				</Document>
				<Document ID="2" Title="Doc 2">
					<Value>Doc 2 Value of Year 2000 attr Y</Value>
				</Document>
			</Year>
		</Attr>
   </Item>

XSL is:

<xsl:for-each select="Attr">

<table width="98%" border="1" cellpadding="4"
cellspacing="0" align="center">
	
	<tr>
		<td class="cssheader11">
			<xsl:value-of select="Name"
disable-output-escaping="yes"/>
		</td>
		<xsl:for-each select="Year">
		<td class="cssheader11">
			<xsl:value-of select="@Value"
disable-output-escaping="yes"/>
		</td>
		</xsl:for-each>
	</tr>
	
	<xsl:for-each
select="Year/Document[not(@ID=preceding::Document/@ID)]">
	
	<xsl:variable name="varDocID" select="@ID" />
	<xsl:variable name="varYear" select="../@Value" />
	<tr>
		<td class="cssbody11">
			<xsl:value-of select="@Title"
disable-output-escaping="yes"/>
		</td>
		<xsl:for-each
select="../../Year/Document[@ID=$varDocID]/Value">
		<td class="cssbody11">
			<xsl:value-of select="."
disable-output-escaping="yes"/>
		</td>
		</xsl:for-each>
	</tr>
	</xsl:for-each>
		
</table><BR/><BR/>
</xsl:for-each>

output:

<table align="center" cellspacing="0" cellpadding="4"
border="0" width="98%">
<tr>
<td class="cssbody12blue"><a name="2701"><b>Item 2.2
title</b></a></td>
</tr>
</table>
<table align="center" cellspacing="0" cellpadding="4"
border="1" width="98%">
<tr>
<td class="cssheader11">X</td><td
class="cssheader11">1999</td><td
class="cssheader11">2000</td>
</tr>
<tr>
<td class="cssbody11">Doc 1</td><td
class="cssbody11">Doc 1 Value of Year 1999 attr
X</td><td class="cssbody11">Doc 1 Value of Year 2000
attr X</td>
</tr>
<tr>
<td class="cssbody11">Doc 2</td><td
class="cssbody11">Doc 2 Value of Year 1999 attr
X</td><td class="cssbody11">Doc 2 Value of Year 2000
attr X</td>
</tr>
</table>
<BR>
<BR>
<table align="center" cellspacing="0" cellpadding="4"
border="1" width="98%">
<tr>
<td class="cssheader11">Y</td><td
class="cssheader11">1999</td><td
class="cssheader11">2000</td>
</tr>
</table>

Thanks

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