The Soyuz LV operated at CSG is the most recent of a long line of Soyuz family vehicles  that taken together, are acknowledged…

“The Soyuz LV operated at CSG is the most recent of a long line of Soyuz family vehicles  that taken together, are acknowledged to be  the most frequently rockets launched in the  world. Vehicles of this family, that launched both the first satellite (Sputnik, 1957) and the first man (Yuri Gagarin, 1961) into space, have been credited with more than 1780 launches to date.”

–Soyuz CSG User’s Manual (March 2012)