if there's any slicker way you'd rather do this which plans ahead for many decades worth of archives, feel free to implement.

Thanks for the sponsorship :). Implemented using an accordion technique, using standard Composr expand/contract styling.

Rishi - I have deployed direct for you.

Others - This is incorporated into the v10 branch. A patch that is v9 compatible is attached.

I forgot to mention...

It tries to open the year for the content you're currently viewing. If none is known, it will open the current year.

nice, looking good, thank you