In terms of numbers of people, the global challenges facing social security systems are largely Asian. Because of rapid population aging in Asia, while it accounted for 28% of the world's population aged 60 and older in 1985, that percentage will more than double to 58% in 2050. Provident funds are a prominent feature of retirement income systems in the region-Asia and the Pacific contain the majority of the world's countries with provident funds. These programs typically provide lump-sum benefits, and thus, do not provide annuity protection against outliving one's resources. Because of the influence of Confucian philosophy with its emphasis on family responsibility for elders, countries in the region have been relatively slow in developing social security programs. China does not have a social security program for workers who do not work for the government or in government-owned enterprises.