LONDON - China's military spending may be about 1.7 times higher than officially stated and will continue to rise sharply, the International Institute for Strategic Studies said.
 
The assessment came a day after the Pentagon said China's military buildup had altered power balances in the Asia-Pacific.
 
The institute said there
         was a growing risk that military competition between the US and China would play an increasing role in relations between the two countries.
 
In its research, the London-based think tank focused on 2003.
 
It estimated Chinese military-related expenditure for that year at US$39.6 billion - based on market exchange rates - compared to the US$23 billion officially stated.
 
The institute also produced an estimate based on purchasing power parity which put the true figure at US$75.5 billion ($120.89 billion).
 
Director-general John Chipman urged some caution with that estimate but said the trend in Chinese military spending was clear.
 
"Expenditure is on a sharp upward trend and will remain so in view of popular and elite support for accelerated defence modernisation."
 
China's military spending has risen by double-digit percentages for the last few years. Its defence spending was 2.7 per cent of GDP in 2003, while the US figure was 3.7 per cent, the institute said.
 
- REUTERS