title: Guddoomiyaha aqalka Iowa ee soo socda Pat Grassley ayaa difaacay 'ganaaxa canshuurta ee dummies' kulanka guddiga
abstract: Qiimaha canshuur celinta gobolka ayaa ka korodhay $ 153 milyan sanadkii 2005 illaa $ 373 milyan sanadkii 2019, sida ay sheegtay Waaxda Dakhliga.