Vietnam’s economy in 2015 grew at its fastest pace in five years, official figures showed Saturday, shaking off regional economic worries with strong exports, record foreign investment and buoyant domestic consumption. The communist nation recorded a GDP growth rate of 6.68 percent, easily surpassing the government’s 6.2 percent target with a figure that looks set to be one of Southeast Asia’s strongest showings for the year, reports AFP.But Vietnam has proved resistant to the slowdown inside its giant northern neighbour.Exports rose 8.1 percent in the 12 months through December while imports climbed 12 percent.