Refer to the figure below to answer the following questions. 
Figure 7.2.2
The figure shows the market for helicopters in Canada,where D is the domestic demand curve and S is the domestic supply curve.The world price is $36 million per helicopter.
-In Figure 7.2.2,if the economy moves from no trade to international trade,consumer surplus in Canada ________ by ________.
Definitions:
Fixed-interval
A method of reinforcement where rewards are dispensed for the initial response after a set time period has elapsed.
Variable-interval
A schedule of reinforcement where a response is rewarded after an unpredictable amount of time has passed, in behaviorism.
Positive Reinforcement
A process by which the likelihood of a behavior's occurrence is increased through the addition of a desirable stimulus immediately following the behavior.
Productivity Goal
An objective set to achieve a specific level of output or efficiency in work or other activities, aiming to optimize performance.
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