2002年10月，美国从加拿大进口了190亿美元的货物。该月商品价格指数为107.2。因此，如果一个加拿大商品单位当月成本为107.20美元，那么美国在该月购买了177,238,805单位的商品。 （177,238,805 = $ 19B / $ 107.20）。 2003年10月，美国从加拿大进口了204亿美元的货物。该月商品价格指数为119.6。因此，如果一个加拿大商品单位当月价格为119.60美元，那么美国在那个月就从加拿大购买了170,568,561单位的商品。 （170,568,561 = $ 20.4B / $ 119.60）。从这一计算结果来看，尽管价格上涨了11.57％，但我们看到美国在此期间减少了3.7％的商品。从我们对需求价格弹性的初步推断，我们看到这些商品的需求价格弹性为0.3，这意味着它们非常缺乏弹性。由此我们可以得出以下两点之一：对这些商品的需求对价格变化一点都不敏感，因此美国生产商愿意吸收价格上涨。在每个价格水平上对这些商品的需求增加（相对于以前的需求水平），但这种影响被价格大幅上涨所抵消，因此购买的总量略有下降。在我看来，2号看起来更有可能。在此期间，美国经济受到大规模政府赤字支出的刺激。在2002年第3季度和2003年第3季度之间，美国国内生产总值增长了5.8％。 GDP增长表明经济增长，这可能需要增加木材等原材料的使用。有证据表明，对加拿大商品的需求增加导致商品价格和加元的上涨都很强劲，但并非压倒性的。
In October 2002, the United States imported $19 billion in goods from Canada. The commodity price index for the month was 107.2. Therefore, if the cost of a Canadian commodity unit in the month is $107.20, then the United States purchased 177,238,805 units of merchandise during the month. (177,238,805 = $19B / $107.20). In October 2003, the United States imported $20.4 billion in goods from Canada. The commodity price index for the month was 119.6. Therefore, if a Canadian commodity unit had a monthly price of $119.60, then the United States purchased 170,568,561 units of goods from Canada that month. (170,568,561 = $20.4B / $119.60). From this calculation, although the price has increased by 11.57%, we have seen that the United States reduced its merchandise by 3.7% during this period. From our preliminary inference of the price elasticity of demand, we see that the price elasticity of demand for these commodities is 0.3, which means they are very inelastic. From this we can draw one of two things: the demand for these goods is not sensitive to price changes, so American producers are willing to absorb price increases. The demand for these commodities increased at each price level (relative to previous demand levels), but this effect was offset by a sharp rise in prices, so the total purchases declined slightly. In my opinion, the number 2 looks more likely. During this period, the US economy was stimulated by large-scale government deficit spending. Between the third quarter of 2002 and the third quarter of 2003, US gross domestic product increased by 5.8%. GDP growth indicates economic growth, which may require increased use of raw materials such as wood. There is evidence that increased demand for Canadian goods has led to strong commodity prices and the Canadian dollar, but it is not overwhelming.