"From 1948 to 1979, productivity rose 108.1 percent, and hourly compensation increased 93.4 percent. From 1979 to 2013, productivity rose 64.9 percent, and hourly compensation rose 8.2 percent." http://www.epi.org/publication/raising-americas-pay/

Figure 3: (1979 - 2013) Top 1% up 138% Bottom 90% up 15%.

The data you are citing is restricted to a slice of the top 20% of the world. Indians and Chinese (i.e. the bottom 50% or so) don't count?

Also note that you cite data on productivity for the economy as a whole, but hourly compensation only for "production and nonsupervisory workers". That's a weird comparison to make - what if the increase in productivity was caused primarily by people outside this narrow group?

So, it says just about nothing about the US income distribution.

PS: I suspect that bump is basically China + India, and the Dip is the US/EU middle class. Yes, outsourcing and free trade is great for other people.

It's not great for wealthy people who were enjoying economic rents by excluding desperately poor people from the global economy. So what? Do people earning $2,000/year (1/10 of what a poor American consumes) not count?

Of note the rich got a free ride while breaking the US middle class. That's actually bad for long term economic growth. It also entrenched and entrenched authoritarian governments around the world ex: China.