Prior to 1993, Andorra had no codified constitution, and the exact prerogatives of the co-princes were not specifically defined in law. In March of that year, a Constitution was approved by a vote of the Andorran people and signed into law by the two reigning Co-princes at the time: President François Mitterrand and Bishop Joan Martí Alanis. It clarified the continuance of the unique Andorran monarchy, and also delineated the precise role and prerogatives of the two Co-princes. Prior to adoption of the Constitution, Andorra paid in odd-numbered years a tribute of approximately $460 to the French ruler, while on even-numbered years, it paid a tribute of approximately $12 to the Spanish bishop, plus six hams, six cheeses, and six live chickens. This medieval custom was subsequently abandoned in 1993