 According to the World Health Organization, the number of elderly people defined as over 60 years old will have doubled from 11% in 2000 to 22% by 2050. As Matthew Parts in his 2006 article shows, this led to a baby boom in the 1950s and early 1960s. So as a paper by banister and colleagues from 2010 shows, one of the first effects is a neighbor shortage in China. As reported by an article in the journal Science, many academics think that the government should relax the one-child policy and allow couples to have more than one children. The team led by Li in 2011 argues that this reduced the cost of living and education when raising children, which would encourage parenthood. First, Zhang and Gose have suggested in 2006 that the central government should increase the elderly financial independence.