Moreover, strategic goals were based on careful diagnosis of underlying problems and their causes, including the need for household energy and food and the impact of deforestation on erosion and flooding. The approach to reforestation was adapted over time, taking account of lessons learned and adopting a more scientific approach to seedling selection and maintenance. The reforestation programme also coincided with a period of very rapid economic growth and societal transformation. Its population is growing at 1.2 percent per year.