Reassuring info about US manufacturing

Despite what people would probably guess, the United States has more industrial capacity than ever.

According to this graph it's doubled in the last 30 years in fact: [click to embiggen]

from this website

Although it's Federal Reserve data, it doesn't say how exactly the capacity is quantified. I would assume it's something like the value of the products if the factory/mines/businesses ran at full blast.

The thing is--which is stuff we've talked about in engineering classes--is that innovation, making things more efficiently with better tools, and automation, such as robots and computers, have been reducing the number of jobs much more than outsourcing ever has.