The number of migrants who sought protection in Bulgaria between July and September bubbled to nearly half of all applicants, Eurostat data shows.
With 3145 arrivals applying for international protection with Bulgarian authorities, Afghan migrants considerably outnumbered Iraqis (1365), Syrians (760) and Iranians (220), with only 60 applicants from other nationalities over this year's third quarter, according to the EU statistics body.
The number of Afghans makes up 49% of the total, Eurostat has calculated.
On Thursday, the State Agency for Refugees announced its figures for November, showing the overall number of Afghan protection seekers outweighed that of Iraqis and Syrians considerably since January.
Afghan applicants were 8721 for that period, while the number of Iraqi and Syrian nationals seeking protection was 5136 and 2348, respectively.