Identify three macroeconomic variables in the United States that impact the supply and/or demand of the product or service produced by the company you selected for your microeconomic/macroeconomic analysis papers.

Interpret the trends of the three selected macroeconomic variables for the past three years and evaluate how these trends will likely impact the supply and demand of your chosen product or service as well as the financial performance of your chosen company.

The product is the Apple iPhone.