Is the use of “the” in the sentences below correct? :<br/><br/>Oil prices have an effect on <b>the</b> domestic GDP (Gross Domestic Product).<br/><br/>Oil prices have an effect on<b> the</b> domestic CPI (Consumer Price Index).<br/><br/>Oil prices have an effect on <b>the </b>domestic exchange rate.<br/><br/><br/><br/> I felt that since a country has only one GDP, CPI and the exchange rate that “the” should there, but I am not sure.<br/><br/>What about this:<br/><br/>Oil prices have an effect on<b> the</b> value of <b>the</b> domestic currency.<br/><br/>Are both uses of “the” correct?<br/><br/>The definite article is really confusing for me...<br/><br/>Thanks in advance.