Refer to the following excerpts from Tesla Motors 2013 Annual Report. The excerpts discuss their concentration of credit risk.

Based on the information provided, discuss whether you think their credit risk increased or decreased in 2013 compared to 2012. Limit your answer within 120 words.

As of March 31, 2013 and December 31, 2012, our accounts receivable were derived primarily from the development and sales of powertrain systems as well as sales of regulatory credits to other automobile manufacturers. The following summarizes the accounts receivable in excess of 10% of our total accounts receivable: Customer A Customer B Customer C Customer D March 31, 2013 43% 19% 15% 11% December 31, 2012 2% 15% 4% 56%