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 | Race Title | Grand Prix | Circuit | Date |
| --- | --- | --- | --- | --- |
| 1.0 | Foster's Australian Grand Prix | Australian GP | Albert Park , Melbourne | 7 March |
| 2.0 | Petronas Malaysian Grand Prix | Malaysian GP | Sepang International Circuit , Kuala Lumpur | 21 March |
| 3.0 | Gulf Air Bahrain Grand Prix | Bahrain GP | Bahrain International Circuit , Sakhir | 4 April |
| 4.0 | Gran Premio Foster's di San Marino | San Marino GP | Autodromo Enzo e Dino Ferrari , Imola | 25 April |
| 5.0 | Gran Premio Marlboro de España | Spanish GP | Circuit de Catalunya , Barcelona | 9 May |
| 6.0 | Grand Prix de Monaco | Monaco GP | Circuit de Monaco , Monte Carlo | 23 May |
| 7.0 | Allianz Grand Prix of Europe | European GP | Nürburgring , Nürburg | 30 May |
| 8.0 | Grand Prix du Canada | Canadian GP | Circuit Gilles Villeneuve , Montreal | 13 June |
| 9.0 | United States Grand Prix | United States GP | Indianapolis Motor Speedway | 20 June |
| 10.0 | Mobil 1 Grand Prix de France | French GP | Circuit de Nevers Magny-Cours , Magny Cours | 4 July |
| 11.0 | Foster's British Grand Prix | British GP | Silverstone Circuit , Silverstone | 11 July |
| 12.0 | Großer Mobil 1 Preis von Deutschland | German GP | Hockenheimring , Hockenheim | 25 July |
| 13.0 | Marlboro Magyar Nagydíj | Hungarian GP | Hungaroring , Budapest | 15 August |
| 14.0 | Belgian Grand Prix | Belgian GP | Circuit de Spa-Francorchamps , Spa | 29 August |
| 15.0 | Gran Premio Vodafone d'Italia | Italian GP | Autodromo Nazionale Monza , Monza | 12 September |
| 16.0 | Sinopec Chinese Grand Prix | Chinese GP | Shanghai International Circuit , Shanghai | 26 September |
| 17.0 | Fuji Television Japanese Grand Prix | Japanese GP | Suzuka Circuit , Suzuka | 10 October |
| 18.0 | Grande Prêmio do Brasil | Brazilian GP | Autódromo José Carlos Pace , São Paulo | 24 October |
Question:
When did the Grand Prix de Monaco race?
Answer:
23 May