The average American family's net worth dropped almost 40% between 2007 and 2010, according to a triennial study released [on June 11] by the Federal Reserve. The stunning drop in median net worth -- from $126,400 in 2007 to $77,300 in 2010 -- indicates that the recession wiped away 18 years of savings and investment by families. The results ... highlight the marked deterioration in household finances brought on by the financial crisis and ensuing recession. Much of the drop off in net worth -- to levels not seen since 1992 -- was attributable to a sharp decline in housing values, the Fed said. In 2007, the median homeowner had a net worth of $246,000. Three years later that number had fallen to $174,500, a loss of more than $70,000 on average. Making matters worse, income levels also fell during the tumultuous three-year period, with median pre-tax income falling 7.7% as earnings from capital gains all but disappeared. The loss of income and net worth appears to have impacted savings rates, as the number of Americans who said they saved in the prior year fell from 56.4% in 2007 to 52.0% in 2010 -- the lowest level recorded since the early 1990s. Families in the top 10% of income actually saw their net worth increase over the period, rising from a median of $1.17 million in 2007 to $1.19 million in 2010. Middle-class families who ranked in the 40th to 60th percentile of income earners reported that their median net worth fell from $92,300 to $65,900 over the same time period.