South Korea¡¯s preliminary April trade data gave an early glimpse of how Donald Trump¡¯s aggressive protectionist policies could dent shipments of export-reliant economies.

In one of the world¡¯s first trade figures for April to come out after Trump ratcheted up his tariff campaign, the value of South Korean shipments adjusted for working-day differences fell 5.2% from a year earlier in the first 20 days of April, according to data released Monday by the customs office. That compared with a 5.5% rise reported earlier for the full month of March.

It showed outbound shipments to the U.S. and China were down 14.3% and 3.4%, respectively, while exports to the European Union and Taiwan were up 13.8% and 22%.