Today’s release of GDP and other data brought a batch of mixed signals. 2008 Q4 GDP growth was officially a respectable 6.8% y/y (we forecast 6%), bringing the year’s growth to 9%. However, running the q/q numbers suggests that real growth in Q4 (compared to Q3) was basically zero, though there are a several problems with this calculation (see below). Producer prices fell 1.1% y/y in December, and consumer prices rose 1.2% y/y. Retail sales continued to do OK at 19% y/y, and industrial production for December grew 5.7% y/y, a pick-up from November.