During the 18th century, the Mercantile model introduced the previous century was further developed, with domestic production promoted by loans and bounties and import limited to raw materials not available in Sweden by tolls. The era saw the rise of the so-called "Skeppsbro Nobility" ("Skeppsbroadeln"), the wealthy wholesalers at Skeppsbron who made a fortune by delivering bar iron to the international market and by controlling the chartered companies. The most successful of them was the Swedish East India Company (1731–1813) which had its headquarters in Gothenburg, but was of significant importance to Stockholm because of the shipbuilding yards, the trade houses, and the exotic products imported by the company. Furthermore, before these ships left Stockholm some 100–150 men per ship were recruited, most of them in the city, and as a single trip to China would take 1–2 years the company had a huge impact on Stockholm during this era.