Campaigning in Pennsylvania in April, Hillary Clinton said “We need to go back to the prosperity of the 1990s,” a comment that drew loud, enthusiastic applause. Converted to today’s dollars, per-capita income in the Keystone State is 23% higher than in 1990. People may think Pennsylvania was more prosperous in the past, but the state is better off today. The same can be said for most (needless to say, not all) parts of the country and most demographics. Most are, right now, the best-off they have ever been.