в структуре экспорта преобладает сырье

[Alex15]

Экономика России характеризуется доминированием нефтегазового сектора, в структуре экспорта преобладает сырье (нефть, газ...)

[operator]

raw materials constitute a major portion of its (total) export

[D-50]

...economics is oil/gas/raw/crude material-export driven.....

[_]

варианты:
Oil and gas sector dominates the Russian economy
oil and gas are mainstays of the export structure

[10-4]

exportation of unprocessed materials dominates

foreign trade makes money mostly on crude and gas

['More]

IMHO
Russia's economy is dominated by the oil and gas sector, and the bulk of exports is raw materials (crude oil, gas, etc.)

[V]

либо как Юрий, либо еще
(RF) mainly relies on.. for exports