Bulgaria's M3, the broadest gauge of money supply, increased 8.2% year-on-year to 86.2 billion levs ($51.6 billion/44.1 billion euro) as at the end of April, after growing by 8.4% in March, the central bank, BNB, said on Wednesday. The narrowest measure of money supply, M1, rose 15.7% on the year to 47.7 billion levs at the end of April, following an annual increase of 17.2% in the preceding month, the BNB said in a statement. Net foreign assets increased 2.4% year-on-year at end-April, reaching 51.4 billion levs, while net domestic assets added 9.6% to 53.7 billion levs.