Need to create month over month new opp created report comparing last year to current year

I need to create a report which shows last year and this year month side by side to see new opp created month over month current year and last year. 

Bar chart showing  

opp created by value or count on y axis and x axis should have month of last year and current year next to each other showing month over month trend. 

Jan 25 jan 26 feb 25 feb 26   

I have similar report for leads which has two created date fields which I can use in Group rows and group columns however cant use created date same way in opp report. Once I use created date field in group rows , there is no created date field to use in group columns.