Yemen's oil revenue declined to around $1.6 billion during January-November 2014, down by $892 million from the revenue during the same period in 2013, state media reported on Saturday.
State media quoted a report by the Central Bank of Yemen as saying the fall was blamed on the drop in the country's crude oil exports which in turn was blamed on repeated attacks on oil infrastructure.
The crude exports fell from 22.6 million barrels by November 2013 to 15.4 million barrels by November 2014, the report said.
The attacks on oil infrastructure also affected the domestically consumed crude oil which dropped in 2014 to 19.5 million barrels forcing the authorities to import fuels for $223 million in November, it added.
The November's fuel bill pushed up the spending on fuels during January-November to reach around $2 billion, according to the report.