https://voxeu.org/article/protectionism-was-threatening-global-supply-chains-trump
보호주의는 세계 공급 사슬을 위협하고 있었다, 트럼프 이전에.
Figure 1 Simple average MFN applied tariffs 1995-2015, by Import product category
a) G20 high-income
b) G20 emerging
Figure 2 Temporary trade barrier import coverage, 1995-2016
a) G20 high-income, TTB coverage of imports from China
b) G20 high-income, TTB coverage of imports from non-China
c) G20 emerging,* TTB coverage of imports from China
d) G20 emerging,* TTB coverage of imports from non-China