More than half of the home loans processed by the mortgage aggregator AFG in New South Wales in January were for investors. AFG said this was the highest proportion of new investor mortgages in NSW in the six years it has been compiling monthly data.AFG brokers wrote 6297 mortgages in January, worth a total of A$2.6 billion. Business was down on recent months, but January is a quiet month for the group, and sales were up on January last year.AFG's general manager of sales and operations, Mark Hewitt, said he expected rates to stay low for much of the year. This would drive more investor activity. Hewitt said more first-home buyers were borrowing in January; the proportion of first-home buyers rose from 10.2 per cent in December to 11.8 per cent in January.This rise was driven by a resurgence in Victoria, where the proportion of first-home buyers rose from 8.7 per cent in December to 11.2 per cent in January. In New South Wales, first-home buyers accounted for just 3.4 per cent of AFG's business.