This figure illustrates the percentages of a country's economy made up by different sectors based on its level of income or development. The primary sector is the extraction of raw materials. The secondary sector is the conversion of raw materials into manufactured goods. The tertiary sector is the provision of services rather than manufacture of goods. The figure illustrates that countries with higher levels of socio-economic development tend to have less of their economy made up of primary and secondary sectors and more emphasis in tertiary sectors. The less developed countries exhibit the inverse pattern.