"Since 1981" . . "Libre entreprise Canada." . . "Libre entreprise États-Unis." . . "United States" . . "National Center for Policy Analysis (É.-U.)." . . "États-Unis" . . . . . . . . . . . . "Economic freedom of North America" . "Economic freedom of North America"@en . . . . . . . . . . . . . . . . "Canada" . . . .