The University of Southern California is a private research university in Los Angeles, California. Founded in 1880, it is the oldest private research university in California. USC has historically educated a large number of the nation's business leaders and professionals. The university has also used its location in Los Angeles to establish relationships with research and cultural institutions throughout Asia and the Pacific Rim. An engine for economic activity, USC contributes US$8 billion annually to the economy of the Los Angeles metropolitan area and California. For the 2017–18 academic year, there were 19,170 students enrolled in four-year undergraduate programs. USC also has 26,517 graduate and professional students in a number of different programs, including business, law, engineering, social work, and medicine. The university is one of the top fundraising institutions in the world, consistently ranking among the top three in external contributions and alumni giving rates. USC was one of the earliest nodes on ARPANET and is the birthplace of the Domain Name System. Other technologies invented at USC include DNA computing, dynamic programming, image compression, VoIP, and antivirus software. USC maintains a strong tradition of innovation and entrepreneurship, with alumni having founded companies such as Lucasfilm, Myspace, Salesforce.com, Intuit, Qualcomm, Box, Tinder, and Riot Games. As of 2017, the university has produced the fourth largest number of billionaire alumni out of all undergraduate institutions in the world.