Statistical summary

Majoritarian System and Centralized Control: 31/62 = 50%
Majoritarian System and Diffuse Control: 26/62 = 42%
Majoritarian System and Mixed Control: 2/62 = 3%
Majoritarian System and Without Constitutional Control: 3/62 = 5%
Proportional System and Centralized Control: 40/72 = 55%
Proportional System and Diffuse Control: 16/72 = 22%
Proportional System and Mixed Control: 14/72 = 19%
Proportional System and Without Constitutional Control: 2/72 = 3%
Mixed System and Centralized Control: 31/43 = 72%
Mixed System and Diffuse Control: 5/43 = 12%
Mixed System and Mixed Control: 7/43 = 16%
Majoritarian and Nomination System and Centralized Control: 2/12 = 17%
Majoritarian and Nomination System and Diffuse Control: 9/12 = 75%
Majoritarian and Nomination System and Mixed Control: 1/12 = 8%
Proportional and Nomination System and Centralized Control: 1/1 = 100%
Nomination System and Without Constitutional Control: 1/1 = 100%
No Lower House and Without Constitutional Control: 3/3 = 100%