美国国家科学委员会（NSB）：2024知识和技术密集型产业生产和贸易报告（英文版）

Knowledge- and technology-intensive (KTI) industries produced $11.1 trillion globally in value added in 2022, a 5.6% increase from 2021 in current U.S. dollars compared with a 15.8% post-pandemic rebound from 2020 to 2021 in current U.S. dollars. KTI industries account for about a 10th of U.S. gross domestic product (GDP). Most KTI industry output is in the manufacturing sector, and the U.S. economy is relatively more services oriented. The United States, China, the European Union (EU-27), Ja