The first recorded eruption was in 1804, and it has also erupted in 1821, 1847, 1849, 1854, 1888, 1897, 1904, 1921, 1922, 1924, 1925, 1926, 1963-64, 1965, 1966, 1968, 1970, 1971, 1972, 1973, 1974, 1976, 1994, 1998, 1999-2000