The Labour Minister Lautafi Fio Purcell announced the earnings during his reply on the Supplementary Budget 2020/2021 in Parliament.
He said in the 14 years since the start of the scheme, the workforce had increased steadily to the current 3400 labourers.
"We are seeing an increase in earnings from the scheme," he told the House.
Lautafi said that for the financial year 2019/2020 nearly $US80,000,000 was earned.
"This is money that is going directly to our families and villages which is an amazing development."