Corruption is difficult to measure reliably, but one well-known measure is the Corruption Perceptions Index, produced annually by a Berlin-based NGO, Transparency International (TNI).
腐败是很难可靠地计算的，而是一个被大众所知晓的贪污感知指数是每年由柏林的非政府组织透明国际（TNI）所统计的。