(S (S (SBAR (IN Although) (S (NP (BASENP (DT the) (NN number)) (PP (IN of) (BASENP (NNS smokers)))) (VP (VBZ has) (VP (VP (VBN stabilized) (CC or) (VBN fallen)) (PP (IN in) (BASENP (JJ developed) (NNS areas))))))) (COMMA ,) (S (BASENP (PRP it)) (VP (VBZ is) (VP (VBG rising) (PP (IN in) (NP (BASENP (ADJP (JJ developing) (CC or) (JJ transitional)) (NNS regions)) (COMMA ,) (SBAR (WHNP (WDT which)) (S (VP (VP (VBP contain) (NP (BASENP (JJR more)) (PP (IN of) (NP (BASENP (DT the) (NN world) (POS 's)) (NN population))))) (CC and) (VP (ADVP (RB already)) (NP (BASENP (NN 84) (NN %)) (PP (IN of) (NP (BASENP (DT the) (NN world) (POS 's)) (NNS smokers)))))))))))))) (PERIOD .))