Bulgaria is not yet ready to adopt the single European currency on account of a too-high inflation rate, the European Commission reported in Brussels on Wednesday. Originally planned for the beginning of this year, the introduction of the euro has been postponed after inflation of 9.5% was recorded in the south-east European country last year. The commission is working on the assumption that the inflation rate will fall to 3.1% this year compared with last year, according to its May economic forecast. Countries joining the eurozone must meet criteria on price stability, public finances, exchan…