Although only a small town, Nuuk has developed trade, business, shipping and other industries. It began as a small fishing settlement with a harbor, but as the economy developed rapidly during the 1970s and 1980s, the fishing industry in the capital declined. The port is nevertheless still home to almost half of Greenland's fishing fleet. The local Royal Greenland processing plant absorbs landed seafood amounting to over DKK 50 million (US$7 million) per annum, mainly (80%) shrimp, but also cod, lumpfish and halibut. Seafood, including seal, is also sold in abundance in Nuuk's fish markets, the largest being Kalaaliaraq Market. Minerals including zinc and gold have contributed to the development of Nuuk's economy.