Moscow has one of the largest municipal economies in Europe and it accounts for approximately 22% of Russian GDP. Moscow is the undisputed financial center of Russia and home to the country’s largest banks and many of its largest companies, such as natural gas giant Gazprom. Moscow accounts for 17% of retail sales in Russia and for 13% of all construction activity in the country. Overall, economic stability has improved in recent years; nonetheless, crime and corruption continue still hinder business development. The Cherkizovskiy marketplace was the largest marketplace in Europe, with a daily turnover of about thirty million dollars and about ten thousand venders from different countries (including China, Turkey, Azerbaijan and India). Primary industries in Moscow include the chemical, metallurgy, food, textile, furniture, energy production, software development and machinery industries. Gazprom, the largest extractor of natural gas in the world and the largest Russian company, has head offices also in Moscow, as well as many other oil, gas and electricity companies. Additionally, some industry is now being transferred out of the city to improve the ecological state of the city. Nevertheless, Moscow remains one of Russia’s major industrial centers.