Well it could be 2005, or newer but DME keeps well.
I found a can of LME about that age in my garage. It looked more like a tin football than a can. I didn't have the courage to open it, i donated it to the landfill.
My grandfather stored some of his homebrew under the bed. It was really interesting when they started blowing up in the middle of the night. He couldn't get out of bed, too much glass on the floor.