Bolivia has been governed by democratically elected governments since 1982; prior to that, it was governed by various dictatorships. Presidents Hernán Siles Zuazo (1982–85) and Víctor Paz Estenssoro (1985–89) began a tradition of ceding power peacefully which has continued, although three presidents have stepped down in the face of extraordinary circumstances: Gonzalo Sánchez de Lozada in 2003, Carlos Mesa in 2005, and Evo Morales in 2019.