| 2014 |
5 |
Mikhail Aleshin, Jack Hawksworth, Carlos Huertas, Carlos Munoz, Martin Plowman |
| 2015 |
2 |
Gabby Chaves, Stefano Coletti |
| 2016 |
5 |
Matthew Brabham, Max Chilton, Conor Daly, Spencer Pigot, Alexander Rossi |
| 2017 |
1 |
Ed Jones |
| 2018 |
6 |
Zachary Claman De Melo, Kyle Kaiser, Jordan King, Matheus Leist, Zach Veach, Robert Wickens |
| 2019 |
5 |
Marcus Ericsson, Santino Ferrucci, Colton Herta, Patricio O'Ward, Felix Rosenqvist |
| 2020 |
4 |
Oliver Askew, Dalton Kellett, Alex Palou, Rinus VeeKay |
| 2021 |
6 |
RC Enerson, Romain Grosjean, Jimmie Johnson, Christian Lundgaard, Scott McLaughlin, Cody Ware |
| 2022 |
5 |
Tatiana Calderon, Devlin DeFrancesco, Callum Ilott, Kyle Kirkwood, David Malukas, |