This week marks the fifth anniversary of the collapse of Lehman Bros., heralding the Great Recession. The better off are better off than ever. Most of the rest are right where they started, or worse. For example, earnings of the top 1 percent (those families making more than $394,000 a year) commanded 95 percent of the income gains generated between 2009 and 2012. Their earnings grew by 31 percent in the period, compared with 0.4 percent for the less fortunate. That's according to a study published last week by UC Berkeley economist Emmanuel Saez, whose finding in 2011 that income inequality in the United States is the widest since 1928 was highly publicized. In fact, according to the latest study by Saez, whose numbers are drawn from IRS data, America's top 10 percent (those households earning above $114,000) account for more than half of the nation's total income, the highest percentage since 1917. Despite improvements in the economy, it seems unlikely that U.S. income concentration will fall much in the coming years," Saez concludes. Or it could intensify. Factoring in inflation, median household income ($52,000) has actually fallen by 4.4 percent since June 2009, according to Sentier Research, a Maryland consultancy, in a report last week based on government statistics. Then there's the Federal Reserve, which reported that American families have recovered just 45 percent of the $16 trillion in wealth that went down the tubes in the recession. And most of the recovery has gone to the wealthy, whose income bounced back largely thanks to the recovery of the stock market, according to an analysis by the Federal Reserve Bank of St. Louis in May.