The three largest undergraduate majors in 2009 were Biological Sciences, Unspecified Business, and Psychology, while the three largest graduate majors were Business Administration (MBA), Electrical and Computer Engineering, and Pharmacy (PharmD). The campus has fourteen residence halls, the newest of which opened in Spring 2007. On-campus housing can hold more than 7,100 students. Jester Center is the largest residence hall with its capacity of 2,945. Academic enrollment exceeds the on-campus housing capacity; as a result, most students must live in private residence halls, housing cooperatives, apartments, or with Greek organizations and other off-campus residences. The Division of Housing and Food Service, which already has the largest market share of 7,000 of the estimated 27,000 beds in the campus area, plans to expand to 9,000 beds. The university recognizes more than 1,300 student organizations. In addition, it supports three official student governance organizations that represent student interests to faculty, administrators, and the Texas Legislature. Student Government, established in 1902, is the oldest governance organization and represents student interests in general. The Senate of College Councils represents students in academic affairs and coordinates the college councils, and the Graduate Student Assembly represents graduate student interests. The University Unions Student Events Center serves as the hub for student activities on campus. The Friar Society serves as the oldest honor society at the university and recognizes students who have made significant contributions to the school. Texas Orange Jackets, founded in 1923, is the oldest women's honorary service organization on campus and empowers young women leaders to serve the campus and community. The Texas Blazers, an honorary service organization, act as official hosts of the university. Texas 4000 for Cancer is another student organization, which also doubles as an Austin-based nonprofit, that hosts a 4,500-mile bike ride from Austin, Texas to Anchorage, Alaska, thus far raising over $5 million for cancer research and patient support services since its inception in 2004. The University of Texas at Austin is home to an active Greek community. Approximately 14 percent of undergraduate students are in fraternities or sororities. With more than 65 national chapters, the university's Greek community is one of the nation's largest. These chapters are under the authority of one of the school's six Greek council communities, Interfraternity Council, National Pan-Hellenic Council, Texas Asian Pan-Hellenic Council, Latino Pan-Hellenic Council, Multicultural Greek Council and University Panhellenic Council. Other registered student organizations also name themselves with Greek letters and are called affiliates.