Passage: In 2014, Canada's exports totalled over C$528 billion, while its imported goods were worth over $524 billion, of which approximately $351 billion originated from the United States, $49 billion from the European Union, and $35 billion from China. The country's 2014 trade surplus totalled C$5.1 billion, compared with a C$46.9 billion surplus in 2008.Since the early 20th century, the growth of Canada's manufacturing, mining, and service sectors has transformed the nation from a largely rural economy to an urbanized, industrial one. Like many other developed countries, the Canadian economy is dominated by the service industry, which employs about three-quarters of the country's workforce. However, Canada is unusual among developed countries in the importance of its primary sector, in which the forestry and petroleum industries are two of the most prominent components.Canada is one of the few developed nations that are net exporters of energy. Atlantic Canada possesses vast offshore deposits of natural gas, and Alberta also hosts large oil and gas resources. The vastness of the Athabasca oil sands and other assets results in Canada having a 13% share of global oil reserves, comprising the world's third-largest share after Venezuela and Saudi Arabia. Canada is additionally one of the world's largest suppliers of agricultural products; the Canadian Prairies are one of the most important global producers of wheat, canola, and other grains. Canada's Department of Natural Resources provides statistics regarding its major exports; the country is a leading exporter of zinc, uranium, gold, nickel, aluminum, steel, iron ore, coking coal and lead. Many towns in northern Canada, where agriculture is difficult, are sustainable because of nearby mines or sources of timber. Canada also has a sizeable manufacturing sector centred in southern Ontario and Quebec, with automobiles and aeronautics representing particularly important industries.Canada's economic integration with the United States has increased significantly since...

Question: what year were tariffs eliminated?
1988