Rubber production in Sri Lanka commenced in 1876, with the planting of 1,919 rubber seedlings at the Henarathgoda Botanical Gardens in Gampaha. The total extent under rubber in 1890 was around 50 ha (120 acres) and in the early 1900s it increased to around 10,000 ha (25,000 acres). By 1982 the total extent under rubber was around 180,000 ha (440,000 acres) and the total annual production was 125,000,000 kg (276,000,000 lb). However, the total extent under rubber declined subsequently and at present it is around 120,000 h (430,000 ks)a. Rubber contributes about 0.6% of the total GDP. According to figures published in 2018 by the Rubber Research Institute of Sri Lanka, producing 82,600,000 kg (182,100,000 lb) in 2018.