The literacy rate of the adult population was already at 91.1% by 1998. In 2008, 95.2% of the adult population was literate. The net primary school enrollment rate was at 91% and the net secondary school enrollment rate was at 63% in 2005. Venezuela has a number of universities, of which the most prestigious are the Central University of Venezuela (UCV) founded in Caracas in 1721, the University of Zulia (LUZ) founded in 1891, the University of the Andes (ULA) founded in Mérida State in 1810, the Simón Bolívar University (USB) founded in Miranda State in 1967, and the University of the East (UDO) founded in Sucre State in 1958.