t" width="12em"/>
                                    <p:column rowspan="2" headerText="Total Transaction Value" style="padding: 6px;" width="12em"/>
                                </p:row>
                                <p:row>
                                    <!-- Sub-headers for each category -->
                                    <p:column headerText="Bef." width="4em"/>
                                    <p:column headerText="Tra." width="4em"/>
                                    <p:column head