国际知识产权联盟（IIPA）：2020年美国版权产业经济贡献研究报告（英文版）

Copyright Industries in the U.S. Economy: The 2020 Report demonstrates that the core copyright industries of the United States–those industries whose primary purpose is to create, produce, distribute or exhibit copyright materials–provide significant value added to Gross Domestic Product (GDP); an increasing number of high-paying jobs; real growth which outpaces the rest of the economy; and substantial foreign sales and exports, surpassing many industry sectors.