In 1950, 4 percent of the population in less developed countries was ages 65+. Today, that proportion has risen to nearly 6 percent but is projected to reach nearly 15 percent by mid-century. At the same, the 0-4 population would reach a peak of about 585 million around 2015 and then decline. In more developed countries, the number of children in the 0-4 age group was 82 million in 1950 but that number has been declining since the 1970s and is expected to decrease to 65 million by 2050. The proportion 65+, which was 8 percent in 1950, has increased to 16 percent today and will most likely increase to a record 26 percent by 2050.