While such integration was to remain a goal, and while Bulgaria became yet more tightly integrated with the Soviet Union, progress in this direction was otherwise continually frustrated by the national central planning prevalent in all Comecon countries, by the increasing diversity of its members (which by this time included Mongolia and would soon include Cuba) and by the "overwhelming asymmetry" and resulting distrust between the many small member states and the Soviet "superstate" which, in 1983, "accounted for 88 percent of Comecon's territory and 60 percent of its population."