## FIXME: hotfix to make the (empty) vot_data$value_time_VS1 with the right column types. Probably there is another way to do that, did not look for it.
geom_bar(data = sales_LDV[year<=2050 & year>=2015 & iso == iso_plot], aes(x=as.numeric(as.character(year)),y=shareFS1, group = technology, fill = technology), position = position_stack(), stat = "identity")+