AIA China delivered a 10% increase in value of new business (VONB) in 2021 to $1,166m (before withholding tax) on a like-for-like basis compared to $1,060m in 2020, driven by a very strong double-digit increase in agent productivity in 2021, says Hong Kong-headquartered AIA Group in a statement as it released its 2021 financial results last week.