Statistical summary

Semi-Presidential and Majoritarian: 6/54 = 11%
Semi-Presidential and Proportional: 1/54 = 2%
Semi-Presidential and Mixed: 2/54 = 3%
Semi-Presidential and Majoritarian and Nomination: 6/54 = 11%
Semi-Presidential and Proportional and Nomination: 3/54 = 5%
Semi-Presidential and Majoritarian, Proportional and Nomination System: 1/54 = 2%
Semi-Presidential à Nomination: 1/54 = 2%
Semi-Presidential and Without an Upper House: 34/54 = 62.9%