Skimming the articles it estimates there are 42000 tons of mega(large) plastics, of which 86% would be fishing nets, so 36120 tons. Didn't find the per annum da

Skimming the articles it estimates there are 42000 tons of mega(large) plastics, of which 86% would be fishing nets, so 36120 tons. Didn't find the per annum data, but that's certainly much more than 4 tons a year (else it would've taken 9030 years to get current weight), I'd guess at least 2000 tons per year.