it's a typical info-graphic.
1. They didn't survey wireless audio before, so the number is meaningless.
2. They don't include wired audio, so again, number is pretty much useless.

What it does show, is people want music in their house, and if the designers don't address it, then the owners will with wireless unattractive poor performing speakers.

The most compelling to me was the lighting control numbers, up 50%. Almost all of the other categories were 10% changes.