Russia has a market economy with enormous natural resources, particularly oil and natural gas. It has the 10th largest economy in the world by nominal GDP and the 6th largest by purchasing power parity (PPP). Since the turn of the 21st century, higher domestic consumption and greater political stability have bolstered economic growth in Russia. The country ended 2008 with its ninth straight year of growth, averaging 7% annually between 2000 and 2008. Real GDP per capita, PPP (current international $) was 19,840 in 2010. Growth was primarily driven by non-traded services and goods for the domestic market, as opposed to oil or mineral extraction and exports. The average nominal salary in Russia was $640 per month in early 2008, up from $80 in 2000. In the end of 2011 the average nominal monthly wages reached 24,310 RUR (or $810 USD), while tax on the income of individuals is payable at the rate of 13% on most incomes. Approximately 13.7% of Russians lived below the national poverty line in 2010, significantly down from 40% in 1998 at the worst point of the post-Soviet collapse. Unemployment in Russia was at 6% in 2007, down from about 12.4% in 1999. The middle class has grown from just 8 million persons in 2000 to 55 million persons in 2006.
Oil, natural gas, metals, and timber account for more than 80% of Russian exports abroad. Since 2003, the exports of natural resources started decreasing in economic importance as the internal market strengthened considerably. Despite higher energy prices, oil and gas only contribute to 5.7% of Russia's GDP and the government predicts this will be 3.7% by 2011. Oil export earnings allowed Russia to increase its foreign reserves from $12 billion in 1999 to $597.3 billion on 1 August 2008, the third largest foreign exchange reserves in the world. The macroeconomic policy under Finance Minister Alexei Kudrin was prudent and sound, with excess income being stored in the Stabilization Fund of Russia. In 2006, Russia repaid most