The hole in the centre of a CD was the size of the smallest coin in Europe - a Dutch 10 cent coin which was abolished when the Netherlands joined the Euro.
The height of the average Dutchman increased by more than 3cm from the start of the 1980s, to above 180cm in 2000. But since then, the increase has been marginal and adult men in 2006 were 181cm tall on average, according to the government statistics agency.
The entire population of the Netherlands were sentenced to death by the Spanish Inquisition in 1568. .
Fifty-four billion pound coins - the cost of refurbishment recently announced for the British rail network - would weigh 513,000,000kg, which is equal to the entire weight of fish landed in the Netherlands in an year.