It said these trade restrictions among G20 economies remain at historic high levels.
The restrictive measures cover an estimated USD 460.4 billion worth of traded merchandise, an increase of 37 per cent over the same period previous year.
With restrictions accumulating over time, the share of global trade covered by such measures has soared, the report said.
Commenting on the report, WTO Director-General Roberto Azevedo called on G20 economies to de-escalate trade tensions to spur investment, growth and job creation.
"Historically high levels of trade-restrictive measures are having a clear impact on growth, job creation and purchasing power around the world. We need to see strong leadership from G20 economies if we want to avoid increased uncertainty, lower investment and even weaker trade growth," he said.
Further, the report said a total of 36 new measures aimed at facilitating trade, including eliminating or reducing import tariffs, and export duties.
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