Monthly rates vary though. In the Netherlands you pay €90 or so a month for (mandatory) health insurance, with a €350 a year deductible. Low income households do get partly subsidized by the government of course.

The Netherlands spends ~$5200/pp on healthcare[1]. Where does the rest of the money come from?

[1]: http://www.who.int/countries/nld/en/

Taxes withheld from salary, just like ainiriand mentioned. In The Netherlands (and most other European countries) you pay for insurance directly (which here includes a mandatory basic plan that can be expanded to include things like full dental) and via taxation of income.