Are you referring to this type of plot, which can be found through an author page containing that paper (in this case Evan Shelhamer), by clicking on the title:
At the Google scholar page of that paper you can also hover over the bars to see e.g. that the paper has 109 citations from 2015. I don't know about a way to directly export data from Google scholar. You could probably html scrape the data though, or by manually using "custom range" here to get citation counts for each year.