▁five ▁years ▁I W BF ▁membership ▁grew ▁in ▁size ▁and ▁the ▁feder ation ▁configured ▁itself ▁into ▁ 4 ▁ge ographical ▁zones . ▁ ▁Zone ▁Str ucture ▁I W BF ▁studied ▁several ▁models ▁before ▁creating ▁its ▁current ▁zone ▁structure . ▁Based ▁on ▁the ▁number ▁of ▁National ▁Organ izations ▁for ▁W heel ch air ▁Basketball ▁( NO W B ) ▁with ▁active ▁programs ▁at ▁the ▁national ▁and ▁international ▁level ▁it ▁was ▁decided ▁that ▁I W BF ▁Amer icas ▁and ▁I W BF ▁Europe ▁could ▁be ▁the ▁same ▁as ▁FI BA ▁Amer icas ▁and ▁FI BA ▁Europe . ▁However , ▁because ▁of ▁the ▁limited ▁number ▁of ▁countries ▁with ▁active ▁programs ▁in ▁the ▁rest ▁of ▁the ▁world , ▁I W BF ▁chose ▁to ▁combine ▁some ▁regions ▁to ▁create ▁better ▁development al ▁and ▁compet itive ▁opportun ities ▁within ▁the ▁zone . ▁As ▁a ▁result , ▁the ▁last ▁two ▁zones ▁of ▁I W BF ▁are ▁I W BF ▁Asia ▁O ce ania ▁and ▁I W BF ▁Africa . ▁ ▁As ▁of ▁ 2 0 0 3 , ▁I W BF ▁has ▁ 7 6 ▁N OW B ▁act ively ▁particip ating ▁in ▁wheel ch air ▁basketball ▁throughout ▁the ▁world ▁with ▁this ▁number ▁increasing ▁each ▁year . ▁ ▁Executive ▁Council ▁ ▁I W BF ▁is ▁govern ed ▁by ▁an ▁Executive ▁Council ▁that ▁is ▁elected ▁at ▁the ▁World ▁Congress ▁every ▁four ▁years . ▁Philip ▁Cra ven ▁( Gre at ▁Britain ) ▁who ▁had ▁served ▁as ▁Chair person ▁of ▁the ▁IS M G F ▁wheel ch air ▁basketball ▁Section ▁since ▁ 1