Denmark has a diverse, mixed economy, but one that relies almost entirely on human resources, as there are few mineral resources available, except mature oil and gas wells in the North Sea. Cooperatives form a large part of some sectors, be it in housing, agriculture or retail. Foundations play a large role as owners of private sector companies. Denmark's nominal GDP was estimated to be $333,238 million, the 32nd largest in the world. It has the world's lowest level of income inequality, according to the World Bank Gini (%),[12] and the world's highest minimum wage, according to the IMF.[13] As of June 2010 the unemployment rate is at 7.4%, which is below the EU average of 9.6%.[14] As of 28 February 2014 Denmark is among the countries with the highest credit rating.