Minor fix to plotter
Minor fix to plotter

brianwgoldman/Parameter-less_Population_Pyramid,ltyscu/Parameter-less_Population_Pyramid,ltyscu/Parameter-less_Population_Pyramid,brianwgoldman/Parameter-less_Population_Pyramid,brianwgoldman/FastEfficientP3,ltyscu/FastEfficientP3,ltyscu/FastEfficientP3,brianwgoldman/Parameter-less_Population_Pyramid,ltyscu/Parameter-less_Population_Pyramid,ltyscu/FastEfficientP3,ltyscu/Parameter-less_Population_Pyramid,brianwgoldman/FastEfficientP3,brianwgoldman/Parameter-less_Population_Pyramid,brianwgoldman/FastEfficientP3