Southampton:

At the 2001 Census, 92.4 per cent of the city's populace was White—including one per cent White Irish—3.8 per cent were South Asian, 1.0 per cent Black, 1.3 per cent Chinese or other ethnic groups, and 1.5 per cent were of Mixed Race.

Please answer a question about this article. If the question is unanswerable, say "unanswerable". Going by the 2001 Census, what percentage of Southampton's population is of mixed race?
1.5