Bars Chart - how to compare two Year

[#1]

Hi everyone !

I have a chart that show only a count of data for two differents years. The one you selected and the previous year.

What I need is to enphasize the diference betwen the two years.

Any idea Please !?

[#2]

This is the image they gave to me as an example.

I do not think a simple line can do it.