Here's the summary for the wikipedia article you mentioned in your comment:

This is the map and list of European countries by monthly average wage (annual divided by 12 months) gross and net income (after taxes) average wages for full-time employees in their local currency and in euros. The chart below reflects the average (mean) wage as reported by various data providers. The salary distribution is right-skewed, therefore more than 50% of people earn less than the average gross salary. Thus, the median figures provided further below might be more representative than averages. These figures will shrink after income tax is applied. In certain countries, actual incomes may exceed those listed in the table due to the existence of grey economies. In some countries, social security, contributions for pensions, public schools, and health are included in these taxes.

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