The Table Below Shows the Approximate Value of Canada's Crude

Multiple Choice

The table below shows the approximate value of Canada's crude oil and natural gas exports over a 5-year period.The amounts shown are billions of dollars.
TABLE 2-7
-Refer to Table 2-7.Assume that 2009 is the base year,with an index number = 100.What is the percentage change in the value of exports of natural gas from 2009 to 2013?

A) 71
B) -71%
C) 71%
D) 29%
E) -29%