Average income per capita in Brazil

I am analyzing the evolution of the average income per capita of the families in the state of Minas Gerais in Brazil between 2012 and 2019. I want to show the variation between years, specifically the intervals of 2012 and 2015 and 2015 and 2019. I also disaggregated the income by age and scholarly. The main aspect that I want feedback on is the data labels and scales that I used. The visualizations are in Portuguese and the data labels are in thousands of R$.

Data are here.