Thane is the 15th most populous city in India with a total population of 18,41,488. Highest employment in the Thane district is in Agriculture, Silk, Wool, Cotton Textile, Readymade Garments, Chemical, Engineering and other household industries. The district has 17% of the workforce employed in the Agricultural Sector, 80% in the Industrial Sector and the remaining 3% are Household workers. The major exportable items are Nylon Synthetic Readymade Garments, Embroidered Fabrics, Textiles, Food Products, Pharmaceutical Products, Engineering products and Chemicals, Electronic Products, IT & Software. The major crops produced in the district are Paddy, Ragi, Red Gram, Black Gram, Vari, Bengal Gram, Sapota, Coconut, Mango, Okra, Brinjal and Tomato. A copper plate dating to 1078 AD was discovered near the foundations of Thane Fort in 1787. A land grant from Arikesara Devaraja, lord of Tagara, addressed the inhabitants of a city called "Sri Sthanaka". In the 14th century, Thane was a major port under a Muslim governor which was celebrated for its production of a cloth known as Tanasi. The British occupied Salsette Island, Thana Fort, Fort Versova, and the island fort of Karanja in 1774.