Even economically-challenged cities like Detroit and Philadelphia had higher percent increases of HNWIs than San Jose.

FORBES: America's Fastest Growing Millionaire Cities

This year, the U.S. lost 18.5% of its HNWIs, while Japan lost just 10%.

FORBES: Magazine Article

Currently, the U.S. leads with 2.5 million HNWIs, but Asian countries like Japan and China are nipping at its heels.

FORBES: Magazine Article

Russia--known for its pack of lavish spenders whose bounties are intimately connected to equity markets as well as demand for oil and gas--saw a decline of 26.5% to 97, 000 HNWIs.

FORBES: Magazine Article

While emerging markets like Brazil--with 131, 000 HNWIs--and the rest of Latin America are "poised to grow again" according to the report, another promising market--India--experienced the second-largest drop in millionaires, decreasing by 31.6% to just 84, 000 after an increase of 22.7% in 2007.

FORBES: Lifestyle