The US economy grew at an annual rate of 4% during the April-to-June period, latest figures released by the US Department of Commerce have shown. A report by private payroll processor ADP showed that the US private sector added 218,000 jobs in July. Although official jobs figures will not be released until Friday, the figures are an encouraging sign that the US economy is finally growing at its potential. All three US stock indexes traded higher in the wake of the figures.