There was a brief debate focused on the following question: would the gains of the economy continue to accrue to the top 1% once the recovery started, or would the top 1% have a weak post-recession showing in terms of raw income growth as well as income share of the economy? The top 1% had a rough Great Recession. They absorbed 50% of the income losses, and their share of income dropped from 23.5% to 18.1% percent. Is this a new state of affairs, or would the 1% bounce back in 2010?

Well we finally have the estimated data for 2010 by income percentile, and it turns out that the top 1% had a fantastic year. The data is in the World Top Income Database, as well as Emmanuel Saez’s updated Striking it Richer: The Evolution of Top Incomes in the United States (as well as the excel spreadsheet on his webpage). Timothy Noah has a first set of responses here. The takeaway quote from Saez should be: “The top 1% captured 93% of the income gains in the first year of recovery.”

Two charts, since it is important to make the strong version of this case. First off, let’s get some absolute numbers here. Here is income by important percentiles, as well as the change from 2009-2010. I include the change with and without capital gains, to make sure we understand that this is a phenomenon both in and independent of a strong stock market (click through for larger image):

The bottom 90% of Americans lost $127, the bottom 99% of Americans gained $80, and the top 1% gained $105,637. The bottom 99% is net positive for the year because of around $125 in average capital gains. They can take comfort in efforts by the Right to set the capital gains tax to 0%, which would have netted them an additional couple dozen bucks.

(Also, just so you understand that “The top 1% captured 93% of the income gains in the first year of recovery” isn’t some sort of stats juke, you can take $105,637 and divide it by the the number you get when you add $80 times 99 to $105,637 times 1. That number is 93%, which is the share of income gains the 1% took home.)

And if this wasn’t obvious, you can see the gains become quite high the further you walk up the inequality ladder. When we discuss things like the Buffett Rule, or taxing capital gains as ordinary income, it is important to see how top-heavy that capital gains distribution actually is.

Let’s also put this in the historical frame of 2002 onward. I’m going to normalize some percentiles by their average income in 2002 and show how they have moved going into and out of the recession. This takes the income distribution in 2002 as granted – and any movements from there on out reflect changes from that income. I’m going to exclude capital gains for this chart to show it’s a deeper phenomenon than the stock market, though the effects are the same in either case (click through for larger image):

The Great Recession dropped income for the bottom 99% by 11.6%, completely wiping out the meager gains of the Bush years. And crucially, while 2010 was a year of continued stagnation for the economy as a whole, the 1% began to show strong gains, even when you exclude capital gains.

As you can image, this has increased the percentage of the economic pie that the top 1% takes home. As Saez notes, “excluding realized capital gains, the top decile share in 2010 is equal to 46.3%, higher than in 2007.”

There’s two things worth mentioning. There’s an interesting debate within left-liberal circles on whether or not elite economic interests benefit from a weak recovery, benefits more from a strong recovery, are vaguely indifferent to the United States economy, are impotent during the recession or are more interested in pursuing other agendas during the instability of mass unemployment. These numbers are certainly a point for those argument that the rich are doing just fine, and to whatever extent they’d be doing better with more robust growth and employment it isn’t putting a damper on their earnings.

It’s also worth mentioning that, pre-Recession, inequality hadn’t been that high since the Great Depression, and we are looking to rapidly return to that state. It’s important to remember that a series of choices were made during the New Deal to react to runaway inequality, including changes to progressive taxation, financial regulation, monetary policy, labor unionization, and the provisioning of public goods and guaranteed social insurance. A battle will be fought over the next decade – it’s been fought for the past three years – on all these fronts. The subsequent resolution will determine how broadly-shared prosperity is going forward and whether or economy will continue to be as unstable as it has been.