Comparison of the CPI for Italy and Germany Base

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Comparison of the CPI for Italy and Germany Base

There is a graph(Just one graph.) I need to plot using Excel. The instructions are attached and the part I need is marked as red. You need download data from the source provided and the way to access data from source is also listed.

As the instruction says, the “my country” for me is Italy and the “base country” is Germany. (As these two country use same currency, the Exchange rate is 1 which means the normalized price ratio line is not needed.) The base year is 2010.