Sorry, I can’t dig up a cite at present, but I seem to remember that the canned food that was taken on an Arctic expedition was found to be still perfectly edible when opened 50 or so years later.
To all intents and purposes, most canned food is sterile - it is her metically sealed and heated to a high enough temperature to kill all the nasties. So don’t worry about bacterial contamination making you sick. Sure, after several years the food may degrade slightly in terms of texture, flavour, etc (although it shouldn’t do too much if vacuum packed) but it should be perfectly safe.
Assuming you bought this stuff in 1999, it should be fine for a while. Hell, we’re still eating jam my gran made in the late 1980s, which has been sealed since then and is still fine.