Since the mid 1990s, aggregate household wealth has swelled relative to disposable personal income, largely due to increases in the market value of households' existing assets (see figure 1.2).
( ( Since ( the ( mid 1990s ) ) ) ( , ( ( aggregate ( household wealth ) ) ( ( has ( ( ( swelled ( relative ( to ( disposable ( personal income ) ) ) ) ) , ) ( largely ( due ( to ( increases ( in ( ( ( the ( market value ) ) ( of ( ( households ' ) ( existing assets ) ) ) ) ( -LRB- ( ( see ( figure 1.2 ) ) -RRB- ) ) ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN Since) (NP (DT the) (JJ mid) (NNS 1990s))) (, ,) (NP (JJ aggregate) (NN household) (NN wealth)) (VP (VBZ has) (VP (VBN swelled) (S (ADJP (JJ relative) (PP (TO to) (NP (JJ disposable) (JJ personal) (NN income))))) (, ,) (S (ADJP (RB largely) (JJ due) (PP (TO to) (NP (NP (NNS increases)) (PP (IN in) (NP (NP (NP (DT the) (NN market) (NN value)) (PP (IN of) (NP (NP (NNS households) (POS ')) (VBG existing) (NNS assets)))) (PRN (-LRB- -LRB-) (S (VP (VB see) (NP (NN figure) (CD 1.2)))) (-RRB- -RRB-)))))))))) (. .)))
The reason for the growth of aggregate wealth in households is the appreciating market value of existing assets following the mid 90s.
( ( ( The reason ) ( for ( ( the growth ) ( of ( ( aggregate wealth ) ( in households ) ) ) ) ) ) ( ( is ( ( the ( appreciating ( market value ) ) ) ( of ( ( existing assets ) ( following ( the ( mid 90s ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN reason)) (PP (IN for) (NP (NP (DT the) (NN growth)) (PP (IN of) (NP (NP (JJ aggregate) (NN wealth)) (PP (IN in) (NP (NNS households)))))))) (VP (VBZ is) (NP (NP (DT the) (JJ appreciating) (NN market) (NN value)) (PP (IN of) (NP (NP (VBG existing) (NNS assets)) (PP (VBG following) (NP (DT the) (JJ mid) (NN 90s))))))) (. .)))