He also advanced the ambitious Santiago Antunez de Mayolo and Chira Piura irrigation projects, and the Tinajones, Jequetepeque, Majes, Chavimochic, Olmos, Chinecas hydroelectric projects. Belaúnde also oversaw the establishment of the Peruvian National Bank (Banco de la Nación). To alleviate poverty, Belaúnde also promoted a program of "social interest" homes in Lima and other cities, which benefited dozen thousands of families. Legal recognition was also given to hundreds of indigenous Indian communities, the hospital network was expanded into uncovered areas, and improvements were made in social security coverage. However, his administration was also blamed for making bad economic decisions, and by 1967 the sol was seriously devaluated.