BEIJING, Sept. 12 (Xinhua) -- China invested 300.31 billion yuan (39.9 billion U.S. dollars) in research and development (R&D)last year as it boosted science and technology innovation to develop a more sustainable economy.

    The R&D investment jumped by an annual rate of 22.6 percent, or 55.31 billion yuan, according to a statement jointly released by the National Bureau of Statistics, the Ministry of Science and Technology, and the Ministry of Finance on Wednesday.

    The spending accounted for 1.42 percent of the gross domestic product in the world's fastest-growing major economy in 2006, the highest proportion ever, the statement noted.

    China has set the target of investing two percent of its GDP in the R&D by 2010, according to the 11th Five-Year Program for National Economic and Social Development (2006--2010).

    R&D spending by companies hit 213.45 billion yuan, accounting for 71.1 percent of the total, according to the statement.

    Government research agencies spent 56.7 billion yuan and higher education institutions 27.7 billion yuan, accounting for 18.9 and 9.2 percent respectively.

    About 234.28 billion yuan, or 78 percent of China's total R&D spending went on development work, but only 16.8 percent went on application research and 5.2 percent went on basic scientific research.

    The pharmaceutical, special instruments, electrical machinery, general instruments, transport manufacturing, rubber, and electronics sectors spent more than one percent of their sales revenues on R&D.

    The government earmarked 168.9 billion yuan for the science and technology front, up 26.5 percent, or 35.36 billion yuan, from 2005.

    The sum was 4.2 percent of the government's total expenditure last year, the highest since 1998.