The Rise and Fall of American Growth: The U.S. Standard of Living since the Civil War (The Princeton Economic History of the Western World Book 70)

by Robert J. Gordon

Whereas life expectancy at birth increased at twice the rate during 1890–1950 as during 1950–98 (0.32 years of annual improvement versus 0.15 years), the relationship was reversed for life expectancy at age 70 (0.03 versus 0.05 years annually for the two intervals).