A report by the Korea Development Institute (KDI) said Sunday...South Korea's economy will be dulled from 2010 as its population turns elderly and government spending on pensions and medical insurance surpasses tax revenues. The "Vision 2011" report said South Korea will become an aging society in 2022, meaning at least 14 percent of the population will be elderly. The ratio was 7.13 percent in 2000, and the aging process is much quicker for South Korea compared to 115 years for France, 71 years for the United States, and 24 years for Japan. Economically active population will pivot at 64.3 percent in 2010, falling to 64.1 percent in 2020 and 62.6 percent in 2030. KDI said...economic growth is estimated at 5.2 percent in 2010, sliding henceforth to 3.2 percent in 2020 and 1.7 percent in 2030. The KDI report said...increases in the elderly population means more people will support themselves with their savings. It said...this, in turn, means less private savings at banks and thus contraction in investment.