Franklin Delano Roosevelt (January 30, 1882-April 12, 1945), often referred to by his initials FDR, was the 32nd President of the United States. Elected to four terms in office, he served from 1933 to 1945, and is the only U.S. president to have served more than two terms. A central figure of the 20th century, he has consistently been ranked as one of the three greatest U.S. presidents in scholarly surveys. During the Great Depression of the 1930s, Roosevelt created the New Deal to provide relief for the unemployed, recovery of the economy, and reform of the economic system. His most famous legacies include the Social Security system and the regulation of Wall Street. His aggressive use of an active federal government reenergized the Democratic Party.