easily, caused a lot of accidents and were toxic. In 1844, Swedish professor Gustav Erik Pasch patented a new invention, ”Safety matches - Strike against the box only”. To prevent the matches from igniting so easily, Gustav Erik Pasch separated the chemicals in the match head and placed the phosphorus on a separate surface on the outside of the box for striking ignition. Johan Edvard and Carl Frans Lundström took Pasch's patent and improved it. Later, they manufactured their new Safety matches in their factory in Jönköping. Today it is an important Nordic logistical center, with many companies' central warehouses (such as Elkjøp, IKEA, Electrolux and Husqvarna) situated there. Present The urban area of Jönköping today includes the eastern industrial town of Huskvarna, with which it has grown together. Elmia, a major trade fair and exhibition centre, is situated in Jönköping. Elmia Wood is the world's largest forestry fair, and fairs for subcontractors, trucks, caravans and railways are the biggest of their kind in Europe. Since 2001, Elmia has been the site of the world's largest LAN party, DreamHack, with two events every year, Dreamhack Summer and Dreamhack Winter. Demography Population As of 2018, Jönköping has a total population of 139,222. Population changes Average age 2019 Notable people Johan Björnsson Printz, (1592–1663) governor of the Swedish colony of New Sweden Carl Peter Thunberg, (1743–1828), botanist Aurore Storckenfeldt, (1816–1900), educator Swante M. Swenson, (1816–1896) founder of the SMS ranches in Texas Viktor Rydberg (1828-1895), author, Carl Lotave, (1872–1924) artist, portrait painter John Bauer, (1882–1918) illustrator, painter Bernhard Karlgren, (1889–1978) sinologist and linguist Dag Hammarskjöld, (1905–1961) former United Nations Secretary-General Martin Allwood, (1916–1999) an educator, writer, sociologist, translator and professor. Vladimir Oravsky, (born 1947) author Per G. Malm, (1948–2016) leader in The Church of Jesus Christ of Latter-day Saints Carl Henrik Fredriksson, (born 1965) editor-in-chief and co-founder of Eurozine Fredrik Neij, (born 1978) founder of The Pirate Bay BitTorrent-tracker David F. Sandberg, (born 1981) film director Mona Johannesson, (born 1987), model Music Agnetha Fältskog, (born 1950) singer/songwriter and member of ABBA Nina Persson, (born 1974) vocalist with The Cardigans Amy Diamond, (born 1992), singer The Motorhomes, (created in 1997) rock band The Mary Onettes, (formed in 2000) indie rock band I'm from Barcelona, (formed in 2005) 29-piece indie pop band Sport Stefan Liv, (1980–2011) an ice hockey goaltender Göran Kropp, (1966–2002) mountaineer Anders Gustafsson, (born 1979) kayaker, Olympian Sofia Paldanius, (born 1979)