Plotting a 3 variable TS graph via the GUI (highlight variables and right click for graph option) . Only 5 years to plot 2018 to 2022. Gretl insists on presenting the axis data as 2018.0 2018.5 2019.0..........2022.0 which is meaningless.
The data is actually a simple comparative  plot of first half year trade figures and coded as annual but there is no way to suppress the intermediate points inserted or the decimilisation.
A bar graph presentation might also be useful for discontinuous data.