Download the annual report of PFIZER from its corporate website. The annual report is a pdf document and may be found under the link investor relations / investors. You may choose any year and any listed company. You are required to DESCRIBE the cash flow statement of the company for two consecutive years. You are NOT required to evaluate the cash flows; ONLY: (a) to identify the MAIN cash flows per category of cash flows, and (b) to compare them with the previous year. The objective of this question is to familiarize students with real cash flow statements and their structure.