سؤال قراءة ستيب محلول — الاستنتاج (تدريب 8091)

Bar chart, y-axis unlabeled numerically from 0 to 2500 (the question options describe the unit as cubic meters); x-axis countries: Algeria, Egypt, Arab Rep., Morocco, Asoudi Arabia [printed thus in the source, likely a typo for Saudi Arabia], Syrian Arab Republic, Tunisia. Six bars per country, one per year per the legend: 1967, 1977, 1987, 1997, 2007, 2011. Morocco has the tallest bars overall, peaking at about 2000 in 1967 (Morocco's own highest year) and falling to about 850 by 2011. Syrian Arab Republic's 1967 bar reads about 1200, falling to about 350-400 by 2011 -- a decrease of roughly 800.