A report released on Wednesday by the Pew Research Center found that the wealth gap between the country's top 20 percent of earners and the rest of America had stretched to its widest point in at least three decades. Last year, the median net worth of upper-income families reached $639,400, nearly seven times as much of those in the middle, and nearly 70 times the level of those at the bottom. There has been growing attention to the issue of income inequality. But while income and wealth are related ... the wealth gap zeros in on a different aspect of financial well-being: how much money and other assets you have accumulated over time. "The Great Recession destroyed a significant amount of middle-income and lower-income families' wealth, and the economic 'recovery' has yet to be felt for them," the report concluded. The median household net worth last year for those in the middle was $96,500, only slightly above the $94,300 mark it hit in 1983 (after being adjusted for inflation). A poor household actually had a higher median net worth 30 years ago ($11,400 in 1983) than it counted last year ($9,300). Compare those results with the top fifth of income earners. In 1983, when the Fed began collecting the data, that group had a median wealth of $318,000; in 2013 it owned more than twice that.