8. Wisconsin’s electricity demand increased 3.03% per year over the 35 years from 1970 to 2005. If that trend continued, when would Wisconsin need to have twice as much generating capacity as it did in 2005?

Is Warren Sanderson right about world population growth slowing down (see Spotlight 23.2, page 947)? How much difference does it make in projections if we look at the world as a whole or break it down by countries or regions? In Exercises 9 and 10, we investigate this question, first projecting as a whole and then projecting by regions and adding.