The economy, one of the world's smallest and least developed, is based on agriculture, forestry, and hydroelectricity. Rugged terrain makes it difficult to develop roads and other infrastructure. The economic program in the current 5-year-plan (2002-07) places a strong emphasis on improving education and infrastructure with a special emphasis on increasing activities in the sectors of information and communication technology, energy, and tourism. Bhutan has applied for membership in the World Trade Organization and is in the process of developing clear legal and regulatory systems designed to promote business development.