Davis graduate programs in the top 25% of their respective fields. In 2016, U.S. News & World Report rated UC Davis 2nd globally in Agricultural Sciences, 1st in Plant and Animal Science, 4th in Environment/Ecology, and 1st nationally in Veterinary Medicine, 3rd in Ecology and Evolutionary Biology, 7th (tie) in Biological and Agricultural Engineering, 9th in U.S. Colonial History, 15th in Comparative Politics, 19th in Biological Sciences, 20th in Earth Sciences and 21st in Psychology. The Economics department of UC Davis was also ranked 6th among public universities and 20th nationally according to the RePec (Research Papers in Economics) Rankings in 2011. In 2013, The Economist placed UC Davis Graduate School of Management in the top 8% accredited MBA programs in the United States (ranked 37th nationally and 65th globally). The Academic Ranking of World Universities placed UC Davis 40th nationally and 90th globally for 2019. In its 2019 rankings, Times Higher Education World University Rankings ranked it tied for 59th in the world. The QS World University Rankings ranked it tied for 104th globally for its 2020 ratings, with Veterinary Science ranked 2nd in the world. In 2016, Sierra Magazine ranked UC Davis 8th in its "Greenest Schools" in America list for campus sustainability and climate change efforts. Admissions Admission to UC Davis is rated as "more selective" by U.S. News & World Report. For Fall 2019, UC Davis received 78,093 freshmen applications; 30,358 were admitted (39.1%) and 5,957 enrolled. The average high school grade point average (GPA) of the enrolled freshmen was 4.13; the average SAT scores were between 610 and 710 for reading and 630–790 for math, and 28–34 for the ACT Composite score. For 2021 incoming freshman class, UC Davis received a record of 105,850 applicants, an 11% increase from last year. The admission rate for incoming freshman for the class of 2021 was 37.5%. Library UC Davis' libraries include the Peter J. Shields Library, the Physical Sciences & Engineering Library, the Carlson Health Sciences Library, and the Medical Center Library in Sacramento, contain more than 3.5 million volumes and offers a number of special collections and services. The Peter J. Shields Library has three different architectural styles due to various construction and extensions being added; it is the main library where students study on-campus, with a 24-hour reading room, open computer labs, and unique furniture. Army R.O.T.C. The university is host to an Army Reserve