Small changes add up faster than most people expect.
It is the sort of thing that seems settled until you look at the detail.
What actually changed
The exceptions matter more than the rule, and there are three of them. The figures move about, but the direction has been the same for three years.
The exceptions
The practical effect is easier to see in a single example than in a summary. The figures move about, but the direction has been the same for three years.
The short answer: check the date, then check the figure, then decide.