The financial crisis eliminated 18 years of gains for the median U.S. household net worth, with a 38.8 percent plunge from 2007 to 2010 that was led by the collapse in home prices, a Federal Reserve (Fed) study showed Tuesday. Median net worth declined to $77,300 in 2010, the lowest since 1992, from $126,400 in 2007, the Fed said in its Survey of Consumer Finances. Mean net worth fell 14.7 percent to a nine- year low of $498,800 from $584,600, the central bank said. Almost every demographic group experienced losses, which may hurt retirement prospects for middle-income families, Fed economists said in the report. "The impact has been a massive destruction of wealth all across the board," said Lance Roberts, who oversees $500 million as chief executive officer of Streettalk Advisors LLC in Houston. "What you see is an economy that is really very, very stressed for the bottom 60 to 70 percent of the population that is struggling." The declines in household wealth in the course of the longest and deepest recession since the Great Depression have held back the consumer spending that makes-up about 70 percent of the economy. Fed policy makers led by Chairman Ben Bernanke meet next week to consider whether the central bank needs to add to its record stimulus after employment grew at the slowest pace in a year in May.