The total number of millionaire households last year, an increase of 13%. Global private wealth grew by about 12% last year to $164tr, the BCG report found. In the Asia-Pacific region, private wealth grew by 29% last year to $47tr to make it the world’s second-wealthiest region, replacing Europe. North America, with $51tr in private wealth, remains the richest region in 2014. Asia-Pacific is expected to overtake North America next year as the richest region in the word, BCG said.