Palatine Twin Lakes Tri

Twin Lakes tri was this past Sunday 6/25. I took 4th overall and 1st in age group.  Perfect conditions with temps in the upper 50s at start.  I wore a wet suit despite warm water. Overall, I'm very happy with my race. Felt good even though my time was slower for every event compared to the last TL tri 2 years ago. My swim was 30 sec slower and my bike was 2 min slower and I was a little slower in T-1 and the run.  Overall, I was 3 minutes slower than 2 years ago.  I guess that's not too bad going from 57 to 59, but does this mean I'm getting 1.5 minutes slower at this distance every year?  That's depressing!