Today Taiwan has a dynamic, capitalist, export-driven economy with gradually decreasing state involvement in investment and foreign trade. In keeping with this trend, some large government-owned banks and industrial firms are being privatized. Real growth in GDP has averaged about 8 per cent during the past three decades. Exports have provided the primary impetus for industrialization. The trade surplus is substantial, and foreign reserves are the world's fifth largest. The currency of Taiwan is the New Taiwan dollar.