After 1988, the regime retreated from totalitarian socialism. It permitted modest expansion of the private sector, allowed some foreign investment, and received much needed foreign exchange. The economy was rated in 2009 as the least free in Asia (tied with North Korea). All fundamental market institutions are suppressed. Private enterprises are often co-owned or indirectly owned by state. The corruption watchdog organisation Transparency International in its 2007 Corruption Perceptions Index released on 26 September 2007 ranked Burma the most corrupt country in the world, tied with Somalia.