The 1973 oil shock with the collapse of prices and the worldwide recession it triggered brought the end of the super growth period. Even so, Singapore's growth rate averaged 8.7 percent from 1973 to 1979, which was high compared with other countries during that same period. Manufacturing continued to grow as did transportation and communications. Although the second worldwide oil crisis, beginning in 1979, set off the longest and deepest recession in the industrialized countries since the Great Depression of the 1930s, Singapore was seemingly untouched. If anything, its economy grew in 1980-81 while the world economy was contracting. The real average GDP growth rate between 1979 and 1981 was 8.5 percent. Financial and business services joined manufacturing as the major economic engines. During this period, Singapore's function as a petroleum-servicing entrepôt made it more like an oil producer than an oil consumer.