Kenyans spend on average KSh1,689 (just under 20) per year on bribes according to a survey conducted by the Kenya Anti-Corruption Commission in 2005. The cost of corruption is higher in urban than in rural areas (KSh2,357 against KSh1,367) and outweighs the average monthly household expenditure on health and education. Men typically spend more on bribes than women and bribery is more common among people with a high income level and education. The public sector remains the main receiver of bribes; the National Corruption Perception Survey shows that almost one out of every three Kenyans who seeks public services offers a bribe. Most of the bribes go to officials in the ministry of internal security and provincial administration, which comes under the office of the president, and is widely considered to be the most corrupt of Kenyas 30 ministries.