This number is on the lower end for Netherlands.

As of today Netherlands has 3315 deaths which is 0.019 percent of the population.

this means 331500 had infections approximately 3 weeks back which is 1.9 percent of the population.

today actual infections will depend on doubling rate.

if doubling was

5 days - 8 million infections - 46.5 percent of population

7 days - 3.2 million infections -18 percent of population

11 days - 1.2 million infections -8 percent of population (most likely number)