I'm not sure that demonstrates anything. That just demonstrates that people work different jobs than they did back then; it doesn't tell us anything about wealth distribution.
21% of US jobs are service occupations. All you've really done is establish that cars exist so the wealthy have deemed it no longer necessary to allow filthy peasants to live in their mansions.
That's an unusual measure -- and I like it. I wonder what those percentages are in very wealthy communities in America, e.g. Greenwich and surroundings, Nantucket, Hamptons plus labor communities west.