Answer based on context:

According to the 2011 census Russian citizens are the most numerous foreigners - 11 991, followed by 8 444 EU citizens (UK- 2 605, Greece - 1 253, Germany- 848, Poland - 819 and Italy - 456), citizens of Ukraine - 3 064, Republic of Macedonia - 1 091, Moldova - 893 and Serbia - 569. 22.8% of them are from Asia, mostly from Turkey. Those with dual Bulgarian and other citizenship were 22 152, or 0.3% of the population. Of them persons with Bulgarian and Russian citizenship were 5 257 (23.7%), followed by persons with Bulgarian and Turkish citizenship - 4 282 (19.3%), Bulgarian and citizenship of the USA- 1 725 (7.8%). There are at least 17,527 Refugees of the Syrian Civil War with applications in Bulgaria. In 2001-2015 185,447 people applied for Bulgarian citizenship and 116,222 were provided with. 113,647 were granted on grounds of proven Bulgarian ancestry, including 59,968 Republic of Macedonia citizens. 29,218 were Moldovan citizens, 5930 Ukrainians, 5374 Serbians, 5194 Russians, 3840 Israeli, 2192 Albanians, 692 Turks and others. In 2016, 12,880 foreigners were naturalized, including 6196 Macedonians.

Which citizens were there less than 5000 who belonged to Bulgarian ancestry?
Israeli