Total volume grew 13.
( ( Total volume ) ( ( grew 13 ) . ) )
(ROOT (S (NP (JJ Total) (NN volume)) (VP (VBD grew) (NP (CD 13))) (. .)))
Overall volume decreased.
( ( Overall volume ) ( decreased . ) )
(ROOT (S (NP (JJ Overall) (NN volume)) (VP (VBD decreased)) (. .)))