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This chart illustrates the evolution of new investment amounts in renewable energy sources and fuels in the United States from 2006 to 2018, in billions of U.S. dollars. The amount of U.S. investments in renewable energy sources and fuels experienced a record decline in 2009, reaching 23 billion U.S. dollars. It then peaked in 2011, exceeding 50 billion U.S. dollars. Between 2015 and 2018, investment amounts remained relatively stable, fluctuating between 45 and 48 billion U.S. dollars.