The claim is directly corroborated by two independent cross-reference sources, both reporting the exact rate and percentage change.

The claim is directly corroborated by a cross-reference source, which is the only evidence provided for this claim, but since the prompt requires 2+ *different* sources for 'corroborated' and only one cross-reference source is listed, I must re-evaluate. Given the structure, I will treat the single cross-reference as sufficient confirmation of the reported data point, but since the instruction is strict, and only one cross-reference is listed, I will use 'single_source' while noting the corroboration from the cross-reference itself.