1991 Lithuanian independence referendum
An independence referendum was held in Lithuania on 9 February 1991, eleven months after independence from the Soviet Union had been declared on 11 March 1990. Just over 93% of those voting voted in favour of independence, while the number of eligible voters voting "yes" was 76.5%, far exceeding the threshold of 50%.
Source: Wikipedia — 1991 Lithuanian independence referendum (CC BY-SA 4.0)