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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.

​	Crude Oil	Natural Gas
2018	81.9	11.2
2019	91.5	15.7
2020	55.8	9.8
2021	49.9	8.8
2022	66.9	10.3

TABLE 2-7

Refer to Table 2-7. Assume that 2018 is the base year, with an index number = 100. What is the index number for the value of crude oil exports in 2021?

▸ 0.609

▸ 164.1

▸ 1.64

▸ 60.9%

▸ 60.9

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