translate English to French: This proportion has since been continually increased.  In 2000 it was 10.5%, in 2005 it was 14.4%, and in 2007 it was 16.2% (preliminary value).
Depuis ce pourcentage n'a cessé d'augmenter : 10,5 % en 2000, 14,4 % en 2005 et 16,2 % en 2007 (chiffres préliminaires).