Переделать вывод даты

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE xsl:stylesheet>
<xsl:stylesheet version="1.0"
   xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
   xmlns:hostcms="http://www.hostcms.ru/"
   exclude-result-prefixes="hostcms">
   <xsl:output xmlns="http://www.w3.org/TR/xhtml1/strict" doctype-public="-//W3C//DTD XHTML 1.0 Strict//EN" encoding="utf-8" indent="yes" method="html" omit-xml-declaration="no" version="1.0" media-type="text/xml"/>
   
   <!-- СписокНовостейНаГлавной -->
   
   <xsl:template match="/">
      <xsl:apply-templates select="/informationsystem"/>
   </xsl:template>
   
   <xsl:template match="/informationsystem">
      <!-- Выводим название информационной системы -->
      <p class="h1" hostcms:id="{@id}" hostcms:field="name" hostcms:entity="informationsystem">
         <xsl:value-of disable-output-escaping="yes" select="name"/>
      </p>
      
      <!-- Отображение записи информационной системы -->
      <xsl:if test="informationsystem_item">
         <ul>
            <xsl:apply-templates select="informationsystem_item"/>
         </ul>
      </xsl:if>
      
   <p class="button"><a href="{url}" title="Все новости">Все новости</a></p>
   </xsl:template>
   
   <!-- Шаблон вывода информационного элемента -->
   <xsl:template match="informationsystem_item">
      <!-- Дата время -->
      <li>
         <span class="date">
            <strong><xsl:value-of select="substring-before(date, '.')"/></strong>
            <xsl:variable name="month_year" select="substring-after(date, '.')"/>
            <em><xsl:variable name="month" select="substring-before($month_year, '.')"/>
               <xsl:choose>
                  <xsl:when test="$month = 1"> 01 </xsl:when>
                  <xsl:when test="$month = 2"> 02 </xsl:when>
                  <xsl:when test="$month = 3"> 03 </xsl:when>
                  <xsl:when test="$month = 4"> 04 </xsl:when>
                  <xsl:when test="$month = 5"> 05 </xsl:when>
                  <xsl:when test="$month = 6"> 06 </xsl:when>
                  <xsl:when test="$month = 7"> 07 </xsl:when>
                  <xsl:when test="$month = 8"> 08 </xsl:when>
                  <xsl:when test="$month = 9"> 09 </xsl:when>
                  <xsl:when test="$month = 10"> 10 </xsl:when>
                  <xsl:when test="$month = 11"> 11 </xsl:when>
                  <xsl:otherwise> 12 </xsl:otherwise>
               </xsl:choose>
                                //ВОТ ЭТА СТРОЧКА ВЫВОДИТ ГОД, НУЖНО ВЫВЕСТИ 2-МЯ ПОСЛЕДНИМИ ЦИФРАМИ
            <xsl:value-of select="substring-after($month_year, '.')"/><xsl:text> г.</xsl:text></em>
         </span>
         
         <div class="row">
            <a href="{url}" hostcms:id="{@id}" hostcms:field="name" hostcms:entity="informationsystem_item">
               <xsl:value-of disable-output-escaping="yes" select="name"/>
            </a>
         </div>
      </li>
   </xsl:template>
</xsl:stylesheet>

<xsl:value-of select="substring(date, 9, 2)"/>