It might need to be reported if you haven't reported in 2 years. I would suggest caution however because repotting often leads to the death of a plant. Suddenly your plant has empty soil around its roots (therefore it doesn't dry very fast.). It makes fungal issues and fungus gnats a sudden concern. That being said, if you can pull the plant out of the pot and see a whole bunch of white roots, repotting is probably necessary. Try not to get a pot that's more than 2 inches bigger in diameter than your current pot. That will mitigate the fungal issues.
Also what are you watering it with? A lot of municipal water has a surprising amount of salt in it, and that can build up over time. I find that plants will start to show yellow edges of leaves as they start to show the salt poisoning. You can literally flush the soil out by taking your plant to the shower and just adding a ton of water in the soil several times. It might also need some organic fertilizer if you haven't fed it in 2 years.
Edit: I also forgot to mention, if you pull the plant out of the pot and you see a bunch of brown squishy roots, that's definitely over watering. Cut away as much of the dead roots as possible, they'll just spread disease. And then water less often. Peace lilies tend to show you they want water by wilting.
