I found 30 posts, mostly March to August 2005, and a few from June 2004. The current listings won't show anything older than 30 days, but you can go to the bottom of any forum listing and change the display options to some longer period, and get all the posts for that period. Or, you can click on your username, and from the drop down menu, select "Find all posts by empirefalls" to see all your posts.
If you weren't actively posting in late 2004, you may not know that there was a crash in December 2004, and we lost several months posts -- back to sometime in June for everyone -- in the recovery. Given that your join date was June 2, 2004, I think that probably covers the lost posts. If you had been a few days later joining, your membership would have been lost as well. We had lots of new kittens in December and January, as folks who had been around for several months rejoined.