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:
| Race Name | Circuit | Date | Winning driver | Constructor | Report |
| --- | --- | --- | --- | --- | --- |
| IV Gran Premio di Siracusa | Syracuse | 11 April | Nino Farina | Ferrari | Report |
| XV Pau Grand Prix | Pau | 19 April | Jean Behra | Gordini | Report |
| VI Lavant Cup | Goodwood | 19 April | Reg Parnell | Ferrari | Report |
| III Grand Prix de Bordeaux | Bordeaux | 9 May | José Froilán González | Ferrari | Report |
| IV BRDC International Trophy | Silverstone | 15 May | José Froilán González | Ferrari | Report |
| VII Gran Premio di Bari | Bari | 22 May | José Froilán González | Ferrari | Report |
| II Curtis Trophy | Snetterton | 5 June | Roy Salvadori | Maserati | Report |
| XIII Gran Premio di Roma | Castelfusano | 6 June | Onofre Marimón | Maserati | Report |
| XXIV Grand Prix des Frontières | Chimay | 6 June | B Bira | Maserati | Report |
| I Cornwall MRC Formula 1 Race | Davidstow | 7 June | John Riseley-Prichard | Connaught - Francis | Report |
| I BARC Formula 1 Race | Goodwood | 7 June | Reg Parnell | Ferrari | Report |
| II Crystal Palace Trophy | Crystal Palace | 19 June | Reg Parnell | Ferrari | Report |
| IV Grand Prix de Rouen-les-Essarts | Rouen | 11 July | Maurice Trintignant | Ferrari | Report |
| III Grand Prix de Caen | Caen | 25 July | Maurice Trintignant | Ferrari | Report |
| I August Cup | Crystal Palace | 2 August | Reg Parnell | Ferrari | Report |
| II Cornwall MRC Formula 1 Race | Davidstow | 2 August | John Coombs | Lotus - Connaught | Report |
| I International Gold Cup | Oulton Park | 7 August | Stirling Moss | Maserati | Report |
| RedeX Trophy | Snetterton | 14 August | Reg Parnell | Ferrari | Report |
| XXIII Circuito di Pescara | Pescara | 15 August | Luigi Musso | Maserati | Report |
| V Sachsenring-Rennen | Sachsenring | 15 August | Paul Thiel | EMW | Report |
| III Joe Fry Memorial Trophy | Castle Combe | 28 August | Horace Gould | Cooper - Bristol | Report |
| V Circuit de Cadours | Cadours | 12 September | Jean Behra | Gordini | Report |
| I Grosser Preis von Berlin | AVUS | 19 September | Karl Kling | Mercedes | Report |
| VII Goodwood Trophy | Goodwood | 25 September | Stirling Moss | Maserati | Report |
Question:
How many different constructors had Paul Thiel as a winning driver?
Answer:
1.0