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small nation of 10 people idolizes the TV show The Voice. All they produce and consume are karaoke machines and CDs, in the following amounts: Karaoke Machines €113 % Price Price Quantity (Dollars) Quantity (Dollars) 2017 40 8 2018 25 50 60 10 Using a method similar to that used to calculate the consumer price index, the percentage change in the overall price level is Note: Use 2017 as the base year, and fix the basket at 2 karaoke machine and 4 CDs.) ▼ . (Note: Again, Using a method similar to that used to calculate the GDP deflator, the percentage change of the overall price level is use 2017 as the base year.)