How many times has a Dutch cyclist won the Tour de France?

Explanation

Altogether, cylists from 13 different nations have won the Tour de France since its first edition in 1903. These are split as follows: France - 36, Belgium - 18, Spain - 12, Italy - 9, Luxembourg - 5, USA - 3, Switzerland - 2, The Netherlands - 2, Ireland - 1, Denmark - 1, United Kingdom - 1, Australia - 1 and Germany - 1.