Unlike most of the world's poor countries, South Africa does not have a thriving informal economy. Only 15% of South African jobs are in the informal sector, compared with around half in Brazil and India and nearly three-quarters in Indonesia. The Organisation for Economic Co-operation and Development (OECD) attributes this difference to South Africa's widespread welfare system. World Bank research shows that South Africa has one of the widest gaps between per capita GDP versus its Human Development Index (HDI) ranking, with only Botswana showing a larger gap.