The Herfindahl-Hirschmann concentration index suggests that trade concentration had increased from 0.33 in 2000 up to 0.54 in 2008.
Selon l &apos; indice de concentration d &apos; Herfindahl-Hirschmann, la concentration des échanges serait passée de 0,33 en 2000 à 0,54 en 2008.