 In 1870, over 90% of the tea consumed in Great Britain was still of Chinese origin, but by 1900, this had dropped to 10%, largely replaced by tea grown in British India (50%) and British Ceylon (33%), present-day Sri Lanka.However, consumption of black tea within India remained low until the promotional campaign by the (British-owned) Indian Tea Association in the early 20th century, which encouraged factories, mines, and textile mills to provide tea breaks for their workers.It also supported many independent "chaiwallahs" throughout the growing railway system.