Depends on where you are at. Shrinkage runs around 1.6% on average in the US, but it can vary quite a bit by location. If you are in a rich quiet suburb, you will probably not see it. If you are in a rough neighborhood, or a very dense urban area, you probably will.

I have lived in neighborhoods where theft is unheard of, and I have lived in neighborhoods where I checked to make sure each item hadn't been opened before putting them in my cart.