CBSL says "Expenditure on imports recorded a significant increase in June 2013 mainly as a result of higher expenditure on fuel imports. The average import price of crude oil rose by 9.0 per cent, year-on-year, to US dollars 105.25 per barrel in June 2013, while the import volume of petroleum in June 2013 was also significantly higher on a year on-year basis due to increased imports of crude oil"
http://www.cbsl.gov.lk/pics_n_docs/latest_news/press_20130822e.pdf