A small number of Belarusians and foreigners residing in Belarus are taking part in the Hajj this year. The first time Belarus sent a Hajj delegation after independence in 1991 was in 1998. The largest number of Belarusian pilgrims so far -- over ten people -- went on Hajj in 2002.
There are thought to be over 30,000 Muslims in Belarus (BELTA).
The standard quota for non-Saudi Muslims is one Hajji per 1,000 Muslims, so Belarus ought to be sending 30 people or more each year. I think it's financial difficulties that make this figure hard to reach.