▁were ▁between ▁ 1 5 ▁and ▁ 6 5 ▁years ▁of ▁age , ▁while ▁ 2 . 8 % ▁were ▁ 6 5 ▁years ▁or ▁older . ▁ ▁As ▁of ▁ 2 0 0 6 , ▁Liber ia ▁has ▁the ▁highest ▁population ▁growth ▁rate ▁in ▁the ▁world ▁( 4 . 5 0 % ▁per ▁an num ). ▁ ▁V ital ▁statistics ▁Reg istration ▁of ▁vital ▁events ▁is ▁in ▁Liber ia ▁not ▁complete . ▁The ▁Population ▁Depart ement ▁of ▁the ▁United ▁Nations ▁prepared ▁the ▁following ▁estimates . ▁ ▁F ert ility ▁and ▁birth s ▁Total ▁F ert ility ▁R ate ▁( TF R ) ▁( W anted ▁F ert ility ▁R ate ) ▁and ▁Cru de ▁B irth ▁R ate ▁( C BR ): ▁ ▁F ert ility ▁data ▁as ▁of ▁ 2 0 1 3 ▁( D HS ▁Program ): ▁ ▁Life ▁expect ancy ▁ ▁Eth nic ▁communities ▁of ▁Liber ia ▁ ▁Ind igen ous ▁The ▁ind igen ous ▁eth nic ▁groups ▁of ▁Liber ia ▁can ▁be ▁lingu ist ically ▁divided ▁into ▁three ▁groups ▁who ▁speak ; ▁▁ ▁The ▁isol ate ▁G ola ▁language ▁and ▁the ▁ ▁Mel ▁languages ▁( part icular ly ▁K iss i ) ▁in ▁the ▁east ▁and ▁ ▁Kru ▁languages ▁( part icular ly ▁Bass a ) ▁in ▁the ▁west ▁ ▁to ▁which ▁must ▁be ▁added ▁the ▁imm igr ant ▁communities ; ▁▁ ▁Man de - F u ▁( K p elle , ▁G io , ▁M ano , ▁L oma ) ▁ ▁Man de - T an ▁(