Total foreign trade in agricultural, forestry and aquatic products hit some 31.8 billion USD in the first four months of 2022, an increase of 7 percent against the same period last year, according to the Ministry of Agriculture and Rural Development.Of the figure, exports were worth 17.9 billion USD, up 15.6 percent year-on-year, while imports totalled 13.9 billion USD, down 2.3 percent.