A wide range of factors interact to determine the exchange rate level: the government, market forces of supply and demand for a particular country's currency, interest rates, inflation, a country's balance of trade and/or payments, and consumers' expectations about what will happen in the future.
Use quotation marks for direct quotes. Use quotation marks to surround direct quotes from a source, person, article, or other source. Use a comma before a quote only if you precede the quote with an identifier (a tag) such as he said or According to experts..
If you're unsure whether to precede a quotation with a nothing, a comma, or a colon, then use a comma for short quotations of fewer than seven words and use a colon for longer quotations. This is just a helpful guideline not a rule. Quotation marks can be used to show the actual words spoken or written.