Thanawat Polvichai, the centre’s director, said December’s CSI reached 55, the highest in six years, reflecting a moderate level of corruption.
The UTCC claims signs of corruption began to ease in the latter half of 2014 after the military seized power in a coup and set up a junta-controlled government. Since then, annual losses attributed to corruption have averaged Bt120 billion or 0.8 per cent of GDP, he said.
Earlier, annual losses due to graft were about Bt300 billion to Bt400 billion, or 2.5 per cent of GDP, the centre claims.