The domestic pharmaceutical industry has been a key contributor to the country's impressive economic growth. As one of the world's major producers of pharmaceuticals, the sector achieved an annual compound growth rate of 16.7% between 1978 and 2003. Both far outpaced other economies in the world, making China the world's fastest growing pharmaceutical market. Although China has enjoyed the benefits of an expansive market for pharmaceutical production and distribution, the industry is suffering from minimal innovation and investment in R&D and new product development. The sector's economies of scale have yet to be achieved. Most domestic manufacturers in the pharmaceutical industry lack the autonomic intellectual property and financial resources to develop their own brand products. Most manufacturers rely on the repetitive production of low value added bulk pharmaceuticals and imitation drugs.