The University of California, Los Angeles (UCLA) is a public research university in the Westwood district of Los Angeles, United States. It became the Southern Branch of the University of California in 1919, making it the second-oldest undergraduate campus of the ten-campus University of California system. It offers 337 undergraduate and graduate degree programs in a wide range of disciplines. UCLA enrolls about 31,000 undergraduate and 13,000 graduate students, and had 119,000 applicants for Fall 2016, including transfer applicants, the most applicants for any American university. The university is organized into six undergraduate colleges, seven professional schools, and four professional health science schools. The undergraduate colleges are the College of Letters and Science; Samueli School of Engineering; School of the Arts and Architecture; Herb Alpert School of Music; School of Theater, Film and Television; and School of Nursing. As of 2017, 24 Nobel laureates, 3 Fields Medalists, and 5 Turing Award winners have been affiliated with UCLA as faculty, researchers, or alumni. In addition, two Chief Scientists of the U.S. Air Force. Among the current faculty members, 55 have been elected to the National Academy of Sciences, 28 to the National Academy of Engineering, 39 to the Institute of Medicine, and 124 to the American Academy of Arts and Sciences. The university was elected to the Association of American Universities in 1974. UCLA student-athletes compete as the Bruins in the Pac-12 Conference. The Bruins have won 126 national championships, including 116 NCAA team championships, more than any other university except Stanford, who has won 117. UCLA student-athletes, coaches and staff won 251 Olympic medals: 126 gold, 65 silver and 60 bronze. UCLA student-athletes competed in every Olympics since 1920 with one exception (1924), and won a gold medal in every Olympics that the United States participated in since 1932.