Fresh economic data has been released for China - much of which indicates the economy is indeed moderating. China's economy expanded at the slowest pace in two and a half years, on the back of plunging export demand and an extended government campaign against consumer and property prices.Gross domestic product - that’s the value of all goods and services produced - rose 8.9 percent in the fourth quarter year-on-year, compared with 9.1 percent in the previous three months. This is the first time growth has fallen below nine percent since mid-2009. For the whole of 2011, GDP slowed to 9.2 percent from 10.4 percent in 2010.Meanwhile, industrial output slowed less than expected, rising 12.8 percent in December from a year earlier. Fixed asset investment, a primary driver of the country’s economic growth, was up just shy of almost 28 percent in all of 2011. Retail sales rose 18 percent in December from a year earlier.Finally, real estate investment in China rose almost 28 percent in the 12 months of the year, also slowing a touch from an annual increase of 30 percent in the January to October period.