This doesn't look very reliable to me. Visual basic is #6, up one percent to 5.23% from a year ago (and I checked, a year ago it was about 4.x% on their chart before so a "20% gain" in a year). I know there are lots of vb apps out there but growing that much? This article is just a teaser over the real data at
https://www.tiobe.com/tiobe-index/.