services as the sectors where incomes rise and aa the points where continued growth proceeds . 293. For this reason, a sbarp increase in the importance of the manufacturing sector was to have been expected during these 25 years a funceion of their develoPnent. Instead, measured by the changing proportions of output originating 1n the major economic sectors (see cable 50), this process of structural change oas sloid or non-existent in many developing countries. The share of manufacturing remained about the same ln 1980 as it was in 1960. and little increase in the tmportance of industry in general can be noted outside of the petroleum-expor ti ng econonies. l,breover, in many disadvantaged countries where the share of agrlculture did fall noticeably, it has been more a consequence of deteriorating agricultural performance than tbe successful development of industry and manufacturingt in stlu. other countries the service sector accounts for much of the perceived change in economtc structure, and the commodity-produc ing sectors achieved no positive atructural change in the form of inprovements to the organizatlon' techniques and basic facllities underlying the production of comnodity goods and basic servlces.Table 50. Share eorldof major producing sectora economic regi-ons, 196 0 and (Percentage)A/ 40 /5L9 EngIi 6h Page I37 in total GPD in main l98l a/ Economy groupAgriculture1960 19 81Industrg 1960 l98ll,tanufacturinq 1960 1981 Developed market Developing ma r ket Least developedeconomi,es economtes economies3I.5 60 .93.'1 L6.7 44.526 .0 10.037.8 3 8.130.s 1s.4 5.425 .3 l7 .l 9.2 Source: Department of International Economic and Social Affairs of the United Na ti.ons SecreEa r ia t. ! GDp originating in given sectors as measured in current priceg and exchanqe ra tes . ?94. with possibilities for steady expansion in the manufacturing sector adverselyaffected by the poor performance of agriculture, qro\rth in that sector in many
**Analysis**
The text discusses the structural change in the economic sectors of developing countries, specifically the stagnation of the manufacturing sector and the decline of agriculture in some cases. It also mentions the importance of the service sector in some economies. The text does not mention natural resources, environment, transport, communication, international trade, health, education, employment, humanitarian aid, or culture. It does not discuss science and technology either. The text is mainly focused on the economic development of countries and the changes in their economic structures.

**Category**
Economic development