Pretoria - The Producer Price Index (PPI) in March rose to 7.3 percent in line with market expectation. "The annual percentage change in the PPI was 7.3 percent in March 2011. This rate is 0.6 of a percentage point higher than the corresponding annual rate of 6.7 percent in February 2011," Statistics South Africa (Stats SA) said on Thursday. Driven mainly by higher … [Read more...] about PPI rises in March