The world economy is increasingly characterized as a service economy. This is primarily due to the increasing importance and share of the service sector in the economies of most developed and developing countries. In fact, the growth of the service sector has long been considered as an indicator of a country's economic progress. Economic history tells us that all developing nations have invariably experienced a shift from agriculture to industry and then to the service sector as the mainstay of the economy. This shift has also brought about a change in the definition of goods and services themselves.