I came across this link to SSA income data. I see that the average salary/wage is growing faster than the median salary/wage. So this shows that the majority of the workers continue to get more and more relatively poorer than the “average” worker.

In the upper left of the SSA page is a link to yearly breakdowns of the annual wages. Here is a link the 2017 numbers. It shows the breakdown of the number of earners in each income band, up to 205 people who earned more than $50,000,000. The total of those 205 people was $19,954,445,874.88 for a average of $97,338,760.37 each.

In 2016, only 143 people earned more than $50M with an average of $100.7M each.And in 2015, it was 202 people with an average of $91.4M each. Looks like a lot of volatility at the top.

An interesting page to fiddle with to see where the inequity grows.