New data released Monday explains the numbers behind Sen. Bernie Sanders’ often-cited statistic that the three richest Americans hold more wealth than the 160 million people who make up the bottom 50% of the population.

Washington Post columnist Greg Sargent published what he called “stunning” findings from UC Berkeley economist Gabriel Zucman, showing how both an explosion in annual earnings by the rich and an increasingly regressive tax structure have combined to allow the top 1% of Americans’ wealth to triple over the past five decades.

Meanwhile, working people are taking home just $8,000 more per year than they did in 1970.

In what Sargent called “the triumph of the rich, which is one of the defining stories of our time,” the richer a household is, the more its take-home wealth has grown in the past 50 years.

The top 1% of earners make an average of more than $1 million per year after accounting for taxes they pay, a 50-year increase of more than $800,000—100 times the growth rate of the bottom 50%.

The wealth of the top .1% is five times larger than it was in 1970, while that of the top .01% is seven times larger, at over $24 million in 2018.

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