The automotive industry in South Korea is the fifth-largest in the world as measured by automobile unit production and also the sixth-largest by automobile export volume. While its initial operations were merely the assembling of parts imported from foreign companies, South Korea is today among the most advanced automobile-producing countries in the world. Annual domestic output first exceeded one million units in 1988. In the 1990s, the industry manufactured numerous in-house models, demonstrating not only its capabilities in terms of design, performance, and technology, but also signalling its coming of age.