Myanmar is a member of the East Asia Summit, Non-Aligned Movement, ASEAN, and BIMSTEC, but it is not a member of the Commonwealth of Nations. It is a country rich in jade and gems, oil, natural gas, and other mineral resources. Myanmar is also endowed with renewable energy; it has the highest solar power potential compared to other countries of the Great Mekong Subregion. In 2013, its GDP (nominal) stood at US$56.7 billion and its GDP (PPP) at US$221.5 billion. The income gap in Myanmar is among the widest in the world, as a large proportion of the economy is controlled by supporters of the military government. , according to the Human Development Index, Myanmar ranks 147 out of 189 countries in human development.