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US Census started tracking it and continued its rapid decline as fossil <br />fuels were enthusiastically embraced through the 1950s and 60s. By <br />1970 only 1.3 % of the country heated primarily with wood. By 1990, after <br />heating oil prices rose, 3.9% of the country heated primarily with wood, <br />and today the number rests at about 1.5% of the population, <br />concentrated in northern and mountainous wooded areas. <br />The notion's firewood supply is very sustainable for a number of reasons. The reverse is true in molly developing world <br />countries where firewood demand vastly outstrips supply. In the US, firewood collection is marked by the following trends: <br />1, Studies find thcit 60 m 70% of firewood is cut or collected by the homeowners that use it, indicating extremely local and <br />small-scale firewood collection. <br />2, Homeowners typically cut or collect wood in ways that are low impact on the neighborhood or forest. <br />3, The firewood industry is dominated by mom and --pop businesses that engage in very small scale, decentralized <br />harvesting of trees, not utilized for higher value products (at larger scales, both homeowner and commercial firewood <br />harvesting could lead to sustainability issues in certain ecosystems). <br />4, A large portion of commercially sold firewoocl in urban and suburban areas is from arborists tree services that took <br />down trees for other reasons. <br />Three firewood surveys conducted by the State of Minnesota <br />in 2003 2007 and 2013 provide some of the most detailed <br />state level data about firewood usage and harvesting. The <br />2013 survey found that 80% of residential firewood was <br />harvested by households and no wood vendor in Minnesota <br />has over 1% of the market. Vermont, the state with the <br />highest per capita wood heating and many larger <br />institutional heating systems also conducted a study. in 2018 <br />that found "sufficient material available to keep adding to <br />our already impressive portfolio of wood energy systems <br />without risking forest health or sustainability." Other states <br />such as New Hampshire have also conducted studies, <br />noting that the demand firewood has steadily decreased <br />since its height in 1983. At the height of US firewood use in <br />1983, a US government report found that 71% of "residential <br />fuelwood was self -cut by the user; the rest was obtained <br />from mill residues or purchased." <br />Part of the nation's firewood supply comes from larger <br />commercial harvesting practices. Typically, the firewood <br />