Turkmenistan is one of the few countries in the world which's economy continued to grow in a time of World crisis in 2009.
Turkmenistan has worlds 4th largest natural gas reserves. Once a member in the Soviet Union, now part of CIS.
It's economy continues to expand. As informs International Monetary Fund (IMF) this October. Economy of Turkmenistan will expand by 12.4% this (2013) year and by 10.4% in 2014. Source
I have created a chart, with data of GDP of Turkmenistan 1990-2014
Turkmenistan is not the only one of the former Soviet Union, showing great expand in their economy. Azerbaijan and Kazakhstan have the significant growth in the last years as well.