Compare the changes in each account from 2020 to 2021 and interpret this change in terms of how it impacts the company.

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions Dec. 31, 2021 Dec. 31, 2020 OPERATING ACTIVITIES Consolidated Net Income $ 9,804 $ 7,768 Depreciation and amortization 1,452 1,536 Stock-based compensation expense 337 126 Deferred income taxes 894 (18) Equity (income) loss - net of dividends (615) (511) Foreign currency adjustments 86 (88) Significant (gains) losses - net (1,365) (914) Other operating charges 506 556 Other items 201 699 Net change in operating assets and liabilities 1,325 690 Net Cash Provided by Operating Activities 12,625 9,844