Bulgaria's gross foreign debt increased by an annual 2.7% to 33.98 billion euro ($38.73 billion) at the end of October, the central bank said on Thursday. The gross foreign debt was equivalent to 64.4% of the projected 2018 gross domestic product (GDP), up from 64.1% of GDP at the end of October 2017, the Bulgarian National Bank said in a statement. Compared with the end of September, Bulgaria's external debt edged up by 0.3%.