In 1960, Portugal's per-capita GDP was 38 percent of the European Economic Community average. By the end of the Salazar period in 1968 it had risen to 48 percent, and in 1973 it had reached 56.4 percent; the percentages were affected by the 40 percent of the budget which underwrote the African wars). In 1975 (the year of greatest revolutionary turmoil), Portugal's per-capita GDP declined to 52.3 percent of the EEC average. Due to revolutionary economic policies, oil shocks, recession in Europe and the return of hundreds of thousands of overseas Portuguese from its former colonies, Portugal began an economic crisis in 1974–1975.