Mali:

On 19 November 1968, following progressive economic decline, the Keïta regime was overthrown in a bloodless military coup led by Moussa Traoré, a day which is now commemorated as Liberation Day. The subsequent military-led regime, with Traoré as president, attempted to reform the economy. His efforts were frustrated by political turmoil and a devastating drought between 1968 to 1974, in which famine killed thousands of people. The Traoré regime faced student unrest beginning in the late 1970s and three coup attempts. The Traoré regime repressed all dissenters until the late 1980s.

Please answer a question about this article. If the question is unanswerable, say "unanswerable". Between what years did famine and drought afflict the country?
1968 to 1974