Thread:Project:Support desk/Chronological sorting of category articles

Hello!

I'm setting up a personal Wiki with lots of articles which should be sorted by the year of their publishing. I tried using the year as a sorting key when defining a category, like this:

but at the Category page, the article got sorted under "2". What I would like, however, is that the sections be the whole year, like so: 2010, 2009...

Can anyone help me with some ideas? Is this even doable?

Thanks in advance!