Corruption is a major social problem in the Philippines. According to Transparency International, the Philippines ranked 139th out of 180 countries in their 2009 Corruption Perceptions Index, showing a slightly improved ranking but still a serious level of corruption. As of 2011, the Philippines ranked 129th, higher than its 2010 ranking of 134th, but still indicating a perceived level of corruption above the midpoint. Poverty is also a significant problem, with over 26% of the population living below the poverty line in 2009, a slow decline from 33.1% in 1991. High population growth, income inequality, unemployment, and a weak investment climate have limited poverty reduction despite average GDP growth of 3.2% annually from 2000 to 2009