In the United States in 2012, about 91% of all herbicide usage, determined by weight applied, was in agriculture.[2]: 12 In 2012, world pesticide expenditures totaled nearly $24.7 billion; herbicides were about 44% of those sales and constituted the biggest portion, followed by insecticides, fungicides, and fumigants.[2]: 5 Herbicide is also used in forestry,[3] where certain formulations have been found to suppress hardwood varieties in favor of conifers after clearcutting,[4] as well as pasture systems, and management of areas set aside as wildlife habitat.