I have this dataset:

Where REER is the real effective exchange rate and AE, AF, etc. are the country codes.
I want to create something like picture below and have been using this code: reshape long REER_66_, i(year) j( REER_66 reer) but it doesn't work. Can someone help me with that?

Where REER is the real effective exchange rate and AE, AF, etc. are the country codes.
I want to create something like picture below and have been using this code: reshape long REER_66_, i(year) j( REER_66 reer) but it doesn't work. Can someone help me with that?
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