麦肯锡：2026年建国250周年美国经济竞争力研究报告（英文版）

26 percent of global GDP and is home to 59 of the world’s top 100 firms. In the past several years, accelerating US productivity growth and announced foreign direct investment inflows have sharpened its edge over other advanced economies. — It’s a new world. AI is unveiling an ever-expanding realm of possibilities, just as geopolitical contention is growing and fertility rates are falling. The United States is a global technology leader today and spends 27 percent of the world’s research