My desk...but when?

It took me a while to realize that this is the desk that I'm still using, in the same place, but look at that monitor! and the cassette tapes? and the desk is clean?! I have no idea when this was; it couldn't have really been very long ago, but it looks like it because of the tapes and the monitor, and the keyboard and mouse..and no mini mac in the right corner of desk!