BEIJING- China's tax revenues have increased steadily for nearly a decade as the country's economy boomed, according to data released by the State Administration of Taxation (SAT) on Sunday. The followings are key facts and figures about China's tax revenue during the 2003-2011 period:

-- China's tax revenue totaled more than 47 trillion yuan (7.46 trillion U.S. dollars) between 2003 and 2011, with an annual growth rate of 21.6 percent. The annual tax revenues in 2003 and 2011 stood at 2.09 trillion and 9.96 trillion yuan respectively.

-- Commodity tax and service tax remained as the main sources of China's tax income, although their proportions in the gross tax revenues declined to 59.08 percent in 2011, down from 67.55 percent in 2002.

-- Meanwhile, income tax revenue accounted for 24 percent to 26 percent of the total revenue between 2009 and 2011, up from 21.97 percent in 2002.

-- During the past decade, tax revenue in China's west increased nearly seven-fold thanks to the central government's strategy of developing the area, while tax revenue in the east grew over five-fold and in middle regions nearly six-fold.

-- Tax revenues in the western region accounted for 16.2 percent of the country's total in 2011, a sharp increase from 14 percent 10 years ago, according to the SAT.