Select *
From dbo.country

CountryName, Year, Sales
—————————
Argentina, 2015, 10
Argentina, 2016, 14
Argentina, 2017, 22
Florida, 2015, 10
Florida, 2016, 12
Florida, 2017, 8
Germany, 2015, null
Germany, 2017, null

CountryName, Year, Sales, Development
—————————
Argentina, 2015, 10, 12
Argentina, 2017, 22, 12
Florida, 2015, 10, -2
Florida, 2017, 8, -2
Germany, 2015, null, null
Germany, 2017, null, null