NEW YORK – The number of millionaires worldwide grew by nearly 2 million last year and the group grew nearly 14 percent richer, boosted by rising stock markets and improving economies, according to a study released on Wednesday. The number of high net worth individuals, who have $1 million or more to invest, rose 15 percent to 13.7 million in 2013, and their combined wealth rose to $52.62 trillion, marking five years of growth since the 2008 financial crisis, according to Capgemini and RBC Wealth Management's latest world wealth report. While more millionaires call North America home than any other region, Asia-Pacific was a close second and is expected to overtake North America in 2014, led by surging wealth in Japan, where stock and real estate markets gained, and China, where economic growth adds millionaires at a fast clip every year. The US had the most millionaires, at 4 million, followed by Japan with 2.3 million. Germany was third with 1.1 million, and China was fourth with 758,000. Those four countries were home to about 60 percent of the world's wealthy. The population of global millionaires included 128,300 “ultra” high net worth individuals, who have more than $30 million of assets to invest. This segment, while only 0.9 percent of the wealthy population, holds 34.6 percent of the group's combined wealth. – Reuters