Russia’s oil industry has done the following EXCEPT

Russia’s most important industry — the oil and gas industry, has seen revenues boom. It has paid more tax, fixing the problem with the government’s finances. But some economists worry that Russia’s improvement is too dependent on oil prices.
     They point out that much Russian finance is leaving the country instead of being invested at home.  They say that action taken by the government — in particular the legal action taken against the oil company Yukos — has created an atmosphere that discourages business from investing in Russia.