The socialist market economy of the People's Republic of China is the world's second largest economy by nominal GDP and the world's largest economy by purchasing power parity. Until 2015, China was the world's fastest-growing major economy, with growth rates averaging 10% over 30 years. Due to historical and political facts of China's developing economy, China's public sector accounts for a bigger share of the national economy than the burgeoning private sector. According to the IMF, on a per capita income basis China ranked 71st by GDP (nominal) and 78th by GDP (PPP) per capita in 2016. The country has an estimated $23 trillion worth of natural resources, 90% of which are coal and rare earth metals. China also has the world's largest total banking sector assets of $39.9 trillion with $26.54 trillion in total deposits.