Some would have you believe that America continues to be a place where anyone who works hard can get ahead. But the data paints a different picture altogether: the bottom 90% of Americans are getting screwed.

According to data from Emmanuel Saez of the University of California Berkely, from 1935-1980 the bottom 90% of America’s families captured 70% of all the income growth. In other words, as the country got richer, average families got richer. Now, it’s worth noting that wasn’t a prosperity that shared by all Americans, as this time period also coincided with the Jim Crow South, redlining, and other forms of racial discrimination.

But in the last several decades, the rich, and only the rich, have been able to share in income gains.

The idea of “trickle-down economics” was popularized under President Ronald Reagan, in the 1980s. Yet, the data shows that beginning in the year Reagan took office, all income gains were concentrated at the very top. According to another data set from Saez and from Thomas Piketty, from 1980-2012 the bottom 90% of Americans captured ZERO income growth. All income growth in America went to the top 10% richest Americans.