Hello everybody! I have values for prices for each year (price_1998, price_1999 etc), the avarage prices(aprice_1998, aprice_1999..), the marginal prices(mprice_1998, mprice_1999..). I have to build a graph, on the y axis i need the prices and on the x axis i should have the years(1998, 1999 etc). My big problem is how to create this years variables that way, that they will match with the prices. Can you help me?