This annual book by the World Bank presents environmental data from more than 200 countries relating to agriculture, forests, climate, energy, water, sanitation and ocean health. It functions as a compilation of information allowing countries to value and organise their natural capital. The datasets include an adjusted net savings indicator, which calculates savings considering factors such as natural resource depletion and pollution damage. It also includes an adjusted net national income indicator, which measures income while accounting for factors such as energy, mineral and forest depletion. The 2012 edition adds a new series of data on marine resources, which the World Bank notes are particularly important for small island developing states (SIDS) and many coastal communities.