unpivot partially - possible?

Is it possible to unpivot partially, so that we create a new column called year? Please see attached


Original columns: Country, value sales 2013, value sales 2014,volume sales 2013, volume sales 2014

New columns (after transformation): Country, Year, Value sales, Volume sales


The approach would be: Unpivot -> String Manipulation or Column Splitter (to extract the necessary variables such as year) -> Pivot

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