U.S. real gross domestic product changed from $11.5 trillion in 1998 to $14.8 trillion in 2008. During that same time period, the share of manufactured goods (e.g., cars, appliances) of U.S. real gross domestic product was 12.4 percent in 1998 and 12.6 percent in 2008. What was the dollar value of manufactured output

a. In 1998? ____ trillion

b. In 2008? ____ trillion

c. By how much did the dollar value of manufacturing output change?

It ______ (increased/decreased) by ____ %