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 | Grand Prix | Pole Position | Fastest Lap | Winning Driver | Winning Constructor | Report |
| --- | --- | --- | --- | --- | --- | --- |
| 1.0 | Australian Grand Prix | Mika Häkkinen | Rubens Barrichello | Michael Schumacher | Ferrari | Report |
| 2.0 | Brazilian Grand Prix | Mika Häkkinen | Michael Schumacher | Michael Schumacher | Ferrari | Report |
| 3.0 | San Marino Grand Prix | Mika Häkkinen | Mika Häkkinen | Michael Schumacher | Ferrari | Report |
| 4.0 | British Grand Prix | Rubens Barrichello | Mika Häkkinen | David Coulthard | McLaren - Mercedes | Report |
| 5.0 | Spanish Grand Prix | Michael Schumacher | Mika Häkkinen | Mika Häkkinen | McLaren - Mercedes | Report |
| 6.0 | European Grand Prix | David Coulthard | Michael Schumacher | Michael Schumacher | Ferrari | Report |
| 7.0 | Monaco Grand Prix | Michael Schumacher | Mika Häkkinen | David Coulthard | McLaren - Mercedes | Report |
| 8.0 | Canadian Grand Prix | Michael Schumacher | Mika Häkkinen | Michael Schumacher | Ferrari | Report |
| 9.0 | French Grand Prix | Michael Schumacher | David Coulthard | David Coulthard | McLaren - Mercedes | Report |
| 10.0 | Austrian Grand Prix | Mika Häkkinen | David Coulthard | Mika Häkkinen | McLaren - Mercedes | Report |
| 11.0 | German Grand Prix | David Coulthard | Rubens Barrichello | Rubens Barrichello | Ferrari | Report |
| 12.0 | Hungarian Grand Prix | Michael Schumacher | Mika Häkkinen | Mika Häkkinen | McLaren - Mercedes | Report |
| 13.0 | Belgian Grand Prix | Mika Häkkinen | Rubens Barrichello | Mika Häkkinen | McLaren - Mercedes | Report |
| 14.0 | Italian Grand Prix | Michael Schumacher | Mika Häkkinen | Michael Schumacher | Ferrari | Report |
| 15.0 | United States Grand Prix | Michael Schumacher | David Coulthard | Michael Schumacher | Ferrari | Report |
| 16.0 | Japanese Grand Prix | Michael Schumacher | Mika Häkkinen | Michael Schumacher | Ferrari | Report |
Question:
How many drivers won the Italian Grand Prix?
Answer:
1.0