percent of the tuition. Scholarship and loan programs are also offered by some UPLB units, such as the College of Veterinary Medicine. These rates were introduced in 2007. Previously, base tuition was only ₱300 per unit (since 1989). Library and miscellaneous fees were also increased in 2007, from ₱400 (US$9) per student to ₱1,100 (US$25) and ₱2,000 (US$46), respectively. New fees, such as internet and energy fees, were introduced. The USC at the time saw the over 300 percent increase in tuition as the reason for the low enrollment rate and high student loan levels, which totaled some ₱14 million (US$326,000) in 2007. Additionally, it criticized the STFAP for allegedly being ineffective. Upon its introduction in 1989, only 16 percent of students received discounts. The number fell to 12 percent in 2007. With the passage of Republic Act 10931, tuition and fees have been waived for students pursuing their degrees for the first time in exchange for return service, although it is possible to opt out and pay the full tuition instead. Accreditation UPLB is identified by the Commission on Higher Education as a Center of Excellence in Agriculture, Agricultural Engineering, Biology, Forestry, Information Technology, Environmental Science, Development Communication, Statistics and Veterinary Medicine, as well as a Center of Development in Chemical Engineering. Five undergraduate programs were given the ASEAN University Network-Quality Assessment certification: BS Biology, BS Agricultural and Biosystems Engineering, BS Development Communication, BS Forestry and BS Agriculture. Libraries and collections As of 2007, UPLB's 12 libraries, collectively referred to as the University Library, hold a total of 346,061 volumes. It periodically receives publications from United Nations agencies (including the UNFAO, UN-HABITAT and UNU) and the World Bank. It is a contributor to the International Information System for Agricultural Services and Technology, contributing nearly 30,000 titles between 1975 and 2010. 195,282 of these volumes are housed at the Main Library, while the rest are in unit libraries. The Main Library also houses theses, digital sources, and 1,215 serial titles, among other materials. It has a total floor area of and a seating capacity of 510, making it the largest library in UPLB. One of UPLB's unit libraries is the College of Veterinary Medicine-Animal and Dairy Sciences Cluster Library. It has 17,798 volumes and 198 serial titles, and a total floor area of . It claims to hold the largest collection on veterinary and animal sciences in the country. UPLB