1) How do earnings (using the above provided income from operations) trends compare in terms of both the direction (increase/decrease) and stability of income during the past 5 years for Walmart, Target and Costco? (Figures or Charts are effective tool)

\begin{tabular}{|l|r|r|r|r|r|r|r|} \hline Walmart: & 2022 & 2021 & 2020 & 2019 & 2018 & Total & Average \\ \hline Operating Income & 25942 & 22548 & 20568 & 21957 & 20437 & 111452 & 22290.4 \\ \hline \end{tabular} \begin{tabular}{|l|r|r|r|r|r|r|r|} \hline Target: & 2022 & 2021 & 2020 & 2019 & 2018 & Total & Average \\ \hline Operating Income & 4110 & 4658 & 6539 & 8907 & 3484 & 27698 & 5539.6 \\ \hline \end{tabular} \begin{tabular}{|l|r|r|r|r|r|r|r|} \hline Costco: & 2022 & 2021 & 2020 & 2019 & 2018 & Total & Average \\ \hline Operating Income & 7793 & 6708 & 5435 & 4737 & 4480 & 29153 & 5830.6 \\ \hline \end{tabular}