TI, which released its 2016 report on Thursday, ranked Nigeria 136 out of 176 countries. However, while the organisation scored Nigeria 26 per cent in its last report, it scored the country 28 in its latest report.
The war against corruption is one of the cardinal objectives of the President Muhammadu Buhari-led government which took over in May 2015.
The administration claims to have recovered billions of dollars in cash and assets in the last 18 months but the anti-graft war is perceived to be one-sided.
In the report, TI ranks Denmark as number one with a score of 90 per cent while Somalia is placed at the bottom with a score of 10 per cent.