Demand for Saudi Arabian private sector goods and services remained strong in May, with new orders rising at the fastest rate for almost a year, the Saudi British Bank said Monday in its SABB HSBC Saudi Arabia Purchasing Managers' Index for April 2012. Output and employment levels were increased over the month as a result, though rates of growth in each case were slightly slower than in April. Inevitably, cost pressures remained strong as demand pressures filtered through into both the materials and labor markets. Saudi Arabia's non-oil private sector economy continued to expand at a robust pace during May, with the PMI posting at 60.4, unchanged since April's nine-month high and above the historical series trend. May saw new business placed at Saudi non-oil private sector firms increase at a marked and accelerated rate – the fastest in 11 months. Data showed that, while international sales continued to increase, the domestic market remained the predominant factor driving growth. In line with a rise in new orders, the Saudi non-oil private sector companies expanded production levels and recruited additional staff during May. In both cases, however, growth was slightly weaker than during the previous survey period. Anecdotal evidence suggested that job creation, in number cases, also reflected expectations of increasing workloads in the coming months. Despite a rise in staffing capacities, backlogs of work increased for the eighth month in a row during May. The rate of growth was broadly unchanged since April, and faster than the series average. Slowing only slightly on April's series-record high, cost inflation facing Saudi non-oil private sector firms remained sharp in May. Both purchase prices and staff costs increased over the month, the former again at the faster rate. Inputs reported to be up in price included food, oil and steel. With demand remaining strong, the Kingdom's non-oil private sector firms were able to pass on at least part of the burden of higher costs to clients. Charge inflation rose to the strongest for 11 months. With more growth expected in the near term, businesses stepped up their purchasing activity and accumulated stocks of inputs at the sharpest rate for a year. Despite this, competition among vendors ensured that their delivery performance improved, with lead times shortening for a tenth successive month in May.