Hi Remi,
1. Bind the year column as the labels to the list box
2. Bind the corresponding columns as source for the list box
3. Bind the dummy columns as Destination of the list box
4. Bind The destination area to column chart as required.
you can check the first part of following link as use "list box" instead of the "combo box"
Drilling down from Dashboard to Web Intelligence Report
Regards,
Supriya