I have an issue and I cannot find any documentation on it.
I have a XsltListViewWebpart with a column called Dates that contains a few years in each row. Currently they appear as:

* 2008
* 2009
* 2010
* 2011

I would like them to appear in descending order. I understand this is just text and I need to tell Sharepoint somehow that the row contains years, only then can they be sorted in a descending order. I have tried to mess with the row formatting in order to achieve this but to no successful result.

If its in anyway relevant, the years in each row are also links to the respective folders. How can I achieve this in Sharepoint Designer?

Thank you for any suggestion. Please let me know if I didnt explain the issue correctly.

If there is any documentation on this please give me a link.
Thank you.