Can anybody help me how to retrieve all reports meta data using workbench..?. please send me xml code. Here I am using this xml code but its not working porperly.

<?xml version="1.0" encoding="UTF-8"?>
<Package xmlns="http://soap.sforce.com/2006/04/metadata">
<types>
<members>*</members>
  <members>Reportname</members>
<name>Report</name>
</types>
  <version>24.0</version>
</Package>