When Japan was an emerging market, the consumption ratio was lower: somewhere in the low fifties as a percentage of GDP.

BBC: The global financial crisis and the BRICs

According to Emanuele Baldacci and other economists at the IMF, a sustained rise in public spending by 1% of GDP, spread evenly across health, education and pensions, would increase the ratio of household consumption to GDP by 1.25 percentage points.

ECONOMIST: Chinese consumption is about much more than shopping

He experiments with raising the ratio of investment to consumption, changing the nature and conditions of investment and shifting the balance from private to public spending, while staying within tight constraints on the use of resources.

FORBES: How to Stop Economic Growth