Losing Time

I no longer know the time in years. I have forgotten "how many years ago" events were. The events are clear, but what year they took place in is vague. Did something happen in 2014 or 2015 or 2017? I would need to think hard and count back to get the answer. When I was younger, the answer was on the tip of my tongue. I guess I had less years to look back on.