In 2008, when the economy shrunk, so did the university's endowment. This resulted in problems for an already highly indebted university incapable of generating enough revenue to maintain itself. Because of this, the board of trustees increased tuition costs, which led to strikes. Other strikes were caused by the suggestion of reducing the percentage automatically assigned to the university. No bill has been filed for such purpose. The University of Puerto Rico offers the largest academic choices with 472 academic programs of which 32 can lead to a doctorate. UPR is also the only system with a business school, an engineering school, a law school, a nursing school, a school of architecture, and a school of medicine. Almost all its schools and programs rank first on the island although competition has increased in the last decades with private universities gaining track at a fast pace. The Ana G. Méndez System, the Interamerican University, and the University of the Sacred Heart possess a business school with the University of Sacred Heart leading in non-profit management and social enterprise, as well as in communications. The Polytechnic University of Puerto Rico and the Turabo University both have engineering schools with the Polytechnic University leading in computer security and offering the only master's degree in computer science on the island. Ranking regarding law schools is subjective with the University of Puerto Rico School of Law, the Interamerican University of Puerto Rico School of Law, and the Eugenio María de Hostos School of Law considered the best although UPR still leads in constitutional law. The University of Puerto Rico School of Medicine and the University of Puerto Rico School of Dental Medicine lead in medicine and dentistry. The Interamerican University School of Optometry is the only school of optometry on the island. The Carlos Albizu University leads in psychology. The Metropolitan University leads in environmental management, The UPR leads in environmental science. In terms of arts, the Atlantic University College leads in digital arts. The Conservatory of Music of Puerto Rico and the Escuela de Artes Plásticas y Diseño de Puerto Rico are considered leaders in music and arts respectively. The school of international relations was created in November 2013 under the name of Morales Carrión Diplomatic and Foreign Relations School, ascribed to the Department of State of Puerto Rico and still in development. Almost all junior colleges, colleges, universities, and schools are accredited by the Middle States Association of Colleges and Schools. Specific programs tend to possess their respective accreditation as well (such as ABET, AACSB, LCME, and so on) although it is not uncommon for programs to not possess its expected accreditation—for example, only two business schools are accredited by AACSB.