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:
| Event | Circuit | GT3 Pro Cup Winner | GT3 Pro / Am Cup Winner | GT3 Citation Cup Winner | GT4 Cup Winner |
| --- | --- | --- | --- | --- | --- |
| 1.0 | Monza | No. 9 AutOrlando Sport | No. 24 Blancpain Reiter | No. 31 Ruffier Racing | No. 70 Lotus Italia Scuderia Giudici |
| 1.0 | Monza | Gianluca Roda Raffaele Giammaria Paolo Ruberti | Peter Kox Marc Hayek | Georges Cabannes Grégory Guilvert | Edoardo Piscopo Greg Mansell Leo Mansell |
| 2.0 | Navarra | No. 1 Vita4One | No. 20 SOFREV Auto Sport Promotion | No. 31 Ruffier Racing | No. 61 Lotus Driving Academy |
| 2.0 | Navarra | Frank Kechele Nico Verdonck Michael Bartels | Franck Morel Jean-Luc Beaubelique Ludovic Badey | Georges Cabannes Fabien Michal | Lorenz Frey Rolf Maritz Fredy Barth |
| 3.0 | Spa-Francorchamps Report | No. 33 Audi Sport Team WRT | No. 20 SOFREV Auto Sport Promotion | No. 19 Level Racing | No. 63 RJN Motorsport |
| 4.0 | Magny-Cours | No. 40 Marc VDS Racing Team | No. 2 Vita4One | No. 31 Ruffier Racing | No. 63 RJN Motorsport |
| 4.0 | Magny-Cours | Bas Leinders Maxime Martin Markus Palttala | Niek Hommerson Louis Machiels Paul van Splunteren | Georges Cabannes Fabien Michal Grégory Guilvert | Jordan Tresson Christopher Ward Alex Buncombe |
| 5.0 | Silverstone | No. 40 Marc VDS Racing Team | No. 2 Vita4One | No. 22 Comole Racing | No. 70 Lotus Italia Scuderia Giudici |
Question:
What is the highest numbered event?
Answer:
5.0