It certainly feels like the cost of groceries has been growing at a much more significant pace than the one reported here, it may be worth discussing the methodologies used.
Is this using the average of all goods as in the grocery store has 100 cereals by 10 brands and only 5 cereals have increased their prices by 50% therefore the general trend is pretty flat?
Or is it accounting for volume purchased as well? If those 5 cereals account for 95% of all cereal volume, the metric should be much more heavily swayed by their rate of increase.
I say this because perhaps it feels worse than it appears in these metrics because the specific brands and products available to us and frequently purchased may be inflating higher than industry averages, and "hiding in plain sight"