https://phys.org/news/2018-06-plastic-wasteland-asia-ocean-pollution.html

More than half comes from five Asian countries: China, Indonesia, the Philippines, Thailand and Vietnam, according to a 2015 Ocean Conservancy report.

They are among the fastest growing economies in Asia, where much of the world's plastic is produced, consumed and discarded—most of it improperly in countries where waste management is at best patchy.