This template's initial visibility currently defaults to autocollapse, meaning that if there is another collapsible item on the page (a navbox, sidebar, or table with the collapsible attribute), it is hidden apart from its title bar; if not, it is fully visible.

To change this template's initial visibility, the |state= parameter may be used:

• {{Ethnic groups in Europe|state=collapsed}} will show the template collapsed, i.e. hidden apart from its title bar.
• {{Ethnic groups in Europe|state=expanded}} will show the template expanded, i.e. fully visible.

key to font size: sqrt (population in million/10) e.g. Russians: 122 million – sqrt(12.2)=349%; Portuguese: 11.6 million – sqrt(1.16)=108%; Icelanders: 0.25 million – sqrt(.025)=16%, but shown as 45% (minimal font size)

• "The Peoples of Europe by Demographic Size, Table 1", Pan & Pfeil (2003).^[1]
• 2010 Russian Census^[2][3]