Despite the origins of coffee cultivation in Ethiopia, that country produced only a small amount for export until the twentieth century, and much of that not from the south of the country but from the environs of Harar in the northeast. The Kingdom of Kaffa, home of the plant, was estimated to produce between 50,000 and 60,000 kilograms of coffee beans in the 1880s. Commercial production effectively began in 1907 with the founding of the inland port of Gambela. 100,000 kilograms of coffee was exported from Gambela in 1908, while in 1927–28 over 4 million kilograms passed through that port. Coffee plantations were also developed in Arsi Province at the same time, and were eventually exported by means of the Addis Ababa – Djibouti Railway. While only 245,000 kilograms were freighted by the Railway, this amount jumped to 2,240,000 kilograms by 1922, surpassed exports of "Harari" coffee by 1925, and reached 9,260,000 kilograms in 1936.