The latest numbers are the first revised gross domestic product (GDP) estimates for the last fiscal year.
The data also showed lower-than-estimated growth numbers for exports, capital investment and consumption sectors, suggesting deeper underlying weaknesses in Asia's third-largest economy, which grew at more than 9% before the 2008 global financial crisis.
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The GDP growth for 2011/12 fiscal year was, however, upwardly revised to 6.7% from 6.2%, but that of the 2010/11 year was revised down to 8.9% from 9.3%, the data from the Ministry of Statistics showed.
The government and the central bank have often blamed sharp data revisions for creating problems for policy formulations.