century, Gothenburg evolved into a modern industrial city that continued on into the 20th century. The population increased tenfold in the century, from 13,000 (1800) to 130,000 (1900). In the 20th century, major companies that developed included SKF (est. 1907) and Volvo (est. 1926). In more recent years however, the industrial section has faced a recession, which has spurred the development of new sectors such as increased merchandising, tourism and cultural and educational institutions. The city acquired a mass transit system in 1902, in the form of a network of electric trams. Gothenburg was one of only two Swedish cities (the other being Norrköping) to retain its trams after the switch to driving on the right in 1967, and as such the city has become particularly associated with this form of public transport in the Swedish imagination, even though several other cities have created new tram networks in the decades since. In June 2001, major protests occurred in the city during the EU summit and the visit by US president George W. Bush. See also Timeline of Gothenburg Lödöse Old Älvsborg Battles at Göta Älv Swedish East India Company Notes Further reading