[Tunis Afrique Presse] Tunis/Tunisia -- Trade deficit in the first four months of 2021 edged down to 4420.7 million dinars (MD) against 4844.5 MD in the same period of 2020, an improvement of 423.8 MD, according to a note on trade at current prices of April 2021 released Friday by the National Institute of Statistics (INS).