Business lending is growing at the fastest pace in almost four years, monthly data released by the RBA shows.Business credit over the three months to May 2012 increased by 10.1 per cent on an annualised basis (using seasonally adjusted measures). This is the first double digit rate of growth in business lending since the financial crisis. A year ago business lending by banks was in decline.Only two thirds of this growth in lending is being captured by APRA-regulated banks, however.