Some minors are administered solely by TAMUG, whereas others are jointly administered by the main Texas A&M University campus in College Station. Minor fields of study include anthropology, chemistry, economics, English, geology, history, marine biology, maritime administration, military studies, ocean and coastal resources, oceanography, SCUBA diving technology and methods, and others. Graduate programs at TAMUG are administered by the Departments of Marine Biology, Marine Sciences, and Maritime Administration. In the Department of Marine Biology, students may pursue either a PhD or master's degrees (thesis or non-thesis) in marine biology. In the Department of Marine Sciences, students may pursue a master of marine resources management that can be completed as either a course-based or thesis-based master's program. The Department of Maritime Administration administers a master of maritime administration and logistics. In addition to the local graduate programs administered by the Galveston campus, many faculty hold joint graduate or joint appointments in other departments at Texas A&M University at College Station (TAMU). This allows graduate students to enroll in PhD programs at TAMU, yet complete the PhD in residence on the Galveston campus with the appropriate faculty advisor. Other common graduate programs completed at TAMUG include a PhD in oceanography, master of wildlife and fisheries, etc.  Undergraduate students who immediately know they wish to pursue some graduate school may benefit from a "3+2" program, which allows students to concurrently pursue undergraduate and master's degrees. The duration of the program is 5 years, and the student receives two Texas A&M University degrees (bachelor's and master's). These programs are a year less than usually needed to complete these degrees separately (6 years), which provides considerable added value to their educational careers. Two programs are currently offered at TAMUG in this fashion, bachelor of ocean and coastal resources with a master of marine resources management in the Department of Marine Sciences, and a bachelor of maritime administration and a master of maritime administration and logistics in the Department of Maritime Administration. Enrollment at TAMUG increased from 551 in 1987 to more than 2000 students in 2012. Students originate from 49 different states and the District of Columbia. Science and engineering majors number 75% of the student body; 43% are women; about 50% reported themselves to have been in the top 20% of their high school classes. About 57% plan to pursue a master's or PhD degree and about 65% receive some type of financial aid. On-campus housing is available and may be required for some students.