The British accompanied this change of tenure with policies that promoted the clearing of new lands. Through this process they aimed to increase production even more. Authorities granted a tax amnesty of 12 years on newly cleared farmland. This led to the widespread conversion of wetlands and jungle to paddy lands. The land area devoted to cultivation grew dramatically. In 1830 an estimated 27,000 hectares were being tilled. By 1932 this had ballooned to 4.9 million. Exports increased proportionately.