Press Release – Transparency International NZ The New Zealand public sector and judiciary has again been ranked the least corrupt in the world. The 2020 Corruption Perceptions Index (CPI) released today by global anti-corruption organization Transparency International ranks New Zealand first equal … The New Zealand public sector and judiciary has again been ranked the least corrupt in the world. The 2020 Corruption Perceptions Index (CPI) released today by global anti-corruption organization Transparency International ranks New Zealand first equal with Denmark, with a score of 88 out of 100. This score reflects a one point improvement from last year. Compiled annually, this index ranks countries worldwide by perceived levels of public sector corruption.