Rwanda ranks highly in several categories of the World Bank's ease of doing business index. In 2005, after the country was ranked 158th on the Ease of Doing Business Index, Kagame set up a special unit to analyze the economy and provide solutions to easing business. As a result, the country topped the list of reformers in 2009. In 2012, the country's overall ease of doing business index ranking was 52nd out of 185 countries worldwide, and third out of 46 in Sub-Saharan Africa. It was eighth on the 2012 rankings for ease of starting a business; the Rwanda Development Board asserts that a business can be authorised and registered in 24 hours. The business environment and economy also benefit from relatively low corruption in the country; in 2010, Transparency International ranked Rwanda as the eighth cleanest out of 47 countries in Sub-Saharan Africa and sixty-sixth cleanest out of 178 in the world.