Of the six, only Vietnam posted an increase in exports for the year, up 7.0 percent to 282.66 billion USD, with a 5.2 percent drop to Japan more than offset by a 25.7 percent rise to the United States and an 18.0 percent expansion to China.

The Philippines logged a 10.1 percent fall in exports in 2020, followed by a contraction of 6.0 percent in Thailand, 4.1 percent in Singapore and 2.6 percent each in Malaysia and Indonesia, according to JETRO, referring to statistics from respective countries.

The combined trade surplus of the six ASEAN members more than triple to 133.66 billion USD, as easing energy prices and shrinking domestic demand led to steeper declines in imports than exports. Thailand's trade surplus surged 144.5 percent, compared with an increase of 83.5 percent for Vietnam, 43.9 percent for Singapore and 25.6 percent for Malaysia.

The Philippines narrowed its trade deficit by 46.3 percent to 21.84 billion USD. Indonesia chalked up a trade surplus of 21.74 billion USD, a turnaround from a deficit of 3.6 billion USD in 2019. Singapore accounted for 27.4 percent of the six countries' total trade by value in 2020, followed by Vietnam at 21.3 percent, Thailand at 17.1 percent, Malaysia at 16.5 percent, Indonesia at 11.9 percent and the Philippines at 5.8 percent.