Deltakerland
Tabellen viser hvilke undersøkelsesrunder hvert land har deltatt i, fra første runde i 1983/84 til siste runde i 2017/18.
- Albania: 2013/14, 2017/18
- Armenia: 2009/10, 2013/14, 2017/18
- Aserbajdsjan: 2017/18
- Belgia (flamsk): 1989/90*, 1993/94, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Belgia (fransk): 1985/86, 1989/90*, 1993/94, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Bulgaria: 2005/06, 2013/14, 2017/18
- Canada: 1989/90, 1993/94, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Danmark: alle runder (1983/84–2017/18)
- England: 1983/84, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Estland: 1993/94, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Finland: alle runder (1983/84–2017/18)
- Frankrike: 1993/94, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Georgia: 2017/18
- Grønland: 1993/94, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Hellas: 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Irland: 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Island: 2005/06, 2009/10, 2013/14, 2017/18
- Israel: 1985/86, 1989/90, 1993/94, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18**
- Italia: 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Kasakhstan: 2017/18
- Kroatia: 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Latvia: 1989/90**, 1993/94, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Litauen: 1993/94, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Luxembourg: 2005/06, 2009/10, 2013/14, 2017/18
- Malta: 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Moldova: 2013/14, 2017/18
- Nederland: 1985/86**, 1989/90**, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Nord-Irland: 1989/90**, 1993/94, 1997/98
- Nord-Makedonia: 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Norge: alle runder (1983/84–2017/18)
- Polen: 1989/90, 1993/94, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Portugal: 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Romania: 2005/06, 2009/10, 2013/14, 2017/18
- Russland: 1989/90, 1993/94, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14
- Serbia: 2017/18
- Skottland: 1985/86, 1989/90, 1993/94, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Slovakia: 1993/94, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Slovenia: 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Spania: 1985/86, 1989/90, 1993/94, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Sveits: 1985/86, 1989/90, 1993/94, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Sverige: 1985/86, 1989/90, 1993/94, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Tsjekkia: 1993/94, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Tyrkia: 2005/06, 2009/10, 2017/18**
- Tyskland: 1993/94, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- USA: 1997/98, 2001/02, 2005/06, 2009/10
- Ukraina: 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Ungarn: 1985/86, 1989/90, 1993/94, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Wales: 1985/86, 1989/90, 1993/94, 1997/98, 2001/02, 2005/06, 2009/10, 2013/14, 2017/18
- Østerrike: alle runder (1983/84–2017/18)
* Ett samlet nasjonalt datasett ble levert. ** Undersøkelsen ble gjennomført etter planlagt feltperiode.