耶鲁大学最新研究：美消费者面临1934年以来最高关税税率

Core Insights - The average effective tariff rate on imported goods in the U.S. has reached 18.3%, the highest level since 1934 [1] - Tariff policies are expected to reduce the U.S. GDP growth rate by 0.5 percentage points annually in 2025 and 2026 [1] - The unemployment rate in the U.S. is projected to increase by 0.3 percentage points by the end of 2025 and by 0.7 percentage points by the end of 2026 due to these tariffs [1]