MEW: mortgage equity withdrawl
From 2004 to 2006, Americans took almost $700 billion per annum of net equity out of their homes through borrowing and spent as much as 50% of it on consumables. The most highly regarded study on mortgage equity withdrawals (MEW) is "Estimates of Home Mortgage Originations, Repayments, and Debt On One-to-Four-Family Residences," by Prof. James Kennedy and none other than Alan Greenspan (Federal Reserve Board FEDS working paper No. 2005-41); Kennedy has been updating his numbers.
Also: The Rise of A New Asset Class
Without MEW, we would have had 2 years, 2001 and 2002, with negative GDP growth. We're not going to go get those levels of mortgage equity withdrawals today - not in this environment. We're still seeing some cash-out borrowing, but it's getting more and more difficult; as home values drop, there are going to be fewer and fewer people pulling less and less money out of the "home ATMs." As Paul McCulley says, your home ATM is starting to spit out negative twenty-dollar bills