Here a is a line diagram named Gross operating surplus of chemical products manufacturing in the United States from 1998 to 2016 (in billion U.S. dollars). Along the y-axis, Gross operating surplus in billion U.S. dollars is measured on a linear scale with a minimum of 0 and a maximum of 250. Year is defined as a linear scale of range 2000 to 2015 on the x-axis.