The questionnaire was sent to all 78 artists (18 women and 60 men) participated at Manifesta4, results:

from 78 only 16 was filled out

18 were sent to women and
60 to men

filled out:
8 by women /
8 by men

26 were sent to artists from ex-socialist countries and 52 to West Europeans

filled out:
8 by artists from ex-socialist countries /
8 by West Europeans

According to the results:
the relation of an artist's income from West European countries and from former socialist countries is, rounded off,    5:1
[the artist from West European countries earns 5 times more]