Unfortunately, a lot of this type of wealth generation isn't tracked by most economic measurements. Improvements in the quality of automobiles, entertainment systems, communication systems, etc. have been tremendous over the past decades, but almost none of that surfaces in statistics, mostly because to some degree such improvements are subjective and hard to measure quantitatively.
Heck most smart phones have more computational power than a 1980 computer.
So yes, the US has grown richer (money != wealth).