Bolivia Sources Polity Style: 1825-2019 Military Authority: 1825-1826 Heads of State: 1826-1841 Heads of State: 1841-1920 Heads of State: 1920-1964 Heads of State: 1964-1982 Heads of State: 1982-2019 Last updated on: 26 Jun 2009 02:56:18