Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Round | Circuit | Date | Pole Position | Winning driver | Winning team | Trophy winner |
| --- | --- | --- | --- | --- | --- | --- |
| 1 | ACI Vallelunga Circuit, Campagnano di Roma | 7 April | Miloš Pavlović | Miloš Pavlović | Target Racing | Nino Famà |
| 2 | Misano World Circuit | 28 April | Miloš Pavlović | Miloš Pavlović | Target Racing | Giovanni Faraonio |
| 3 | Autodromo di Pergusa, Enna | 19 May | Miloš Pavlović | Philip Cloostermans | Azeta Racing | Carmine Tancredi |
| 4 | Autodromo Nazionale Monza | 30 June | Philip Cloostermans | Philip Cloostermans | Azeta Racing | Carmine Tancredi |
| 5 | Autodromo Riccardo Paletti, Varano | 21 July | Miloš Pavlović | Miloš Pavlović | Target Racing | Carmine Tancredi |
| 6 | Autodromo Enzo e Dino Ferrari, Imola | 1 September | Vitantonio Liuzzi | Vitantonio Liuzzi | Bertram Schäfer Racing | Silvio Alberti |
| 7 | Autodromo del Levante, Binetto | 8 September | Christiano Citron | Miloš Pavlović | Target Racing | Carmine Tancredi |
| 8 | Mugello Circuit, Scarperia | 6 October | Miloš Pavlović | Miloš Pavlović | Target Racing | Dino Lusuardi |
| 9 | Autodromo dell'Umbria, Magione | 20 October | Andreas Zuber | Christiano Citron | Target Racing | Alberto Morelli |
Question:
which winning team won the least?
Answer:
Bertram Schäfer Racing