As can be concluded from the table below, a growing number of countries have participated in the data collections since the first one in 1995. The fifth data collection was performed during 2011 and the table indicates which countries that have collected data throughout the years.

To get in contact with the responsible national Principle Investigator, please use the country-links below. Apart from country specific contact information there is also a short country summary from the most recent data collection to be found, including a graph showing the national key results compared to the average of all participating countries.

Country	1995 Data	1999 Data	2003 Data	2007 Data	2011 Data
Albania	.	.	.	.	Yes
Armenia	.	.	.	Yes	No
Austria	.	.	Yes	Yes	No
Belarus	.	.	.	.	No
Belgium	.	.	Yes	Flanders a)	Flanders b)
Bosnia and Herzegovina	.	.	.	2008 c)	Yes d)
Bulgaria	.	Yes	Yes	Yes	Yes
Croatia	Yes	Yes	Yes	Yes	Yes
Cyprus	Yes	Yes	Yes	Yes	Yes
Czech Republic	Yes	Yes	Yes	Yes	Yes
Denmark	Yes	Yes	Yes	Yes	Yes
Estonia	Yes	Yes	Yes	Yes	Yes
Faroe Islands	Yes	Yes	Yes	Yes	Yes
Finland	Yes	Yes	Yes	Yes	Yes
France	.	Yes	Yes	Yes	Yes
Georgia	.	.	.	.	No
Germany e)	.	.	6 Bundesl.	7 Bundesl.	5 Bundesl.
Greece	.	Yes	Yes	Yes	Yes
Greenland	.	Yes	Yes	.	.
Hungary	Yes	Yes	Yes	Yes	Yes
Iceland	Yes	Yes	Yes	Yes	Yes
Ireland	Yes	Yes	Yes	Yes	Yes
Isle of Man	.	.	Yes	Yes	Yes f)
Italy	Yes	Yes	Yes	Yes	Yes
Kosovo (under UNSCR 1244)	.	.	.	.	Yes g)
Latvia	Yes	Yes	Yes	Yes	Yes
Liechtenstein	.	.	.	.	Yes
Lithuania	Yes	Yes	Yes	Yes	Yes
Macedonia, FYR of	.	Yes	.	2008 c)	No
Malta	Yes	Yes	Yes	Yes	Yes
Moldova, Republic of	.	.	.	2008 c)	Yes
Monaco	.	.	.	Yes	Yes
Montenegro	.	.	.	2008 c)	Yes
Netherlands	.	Yes	Yes	Yes	Yes g)
Norway	Yes	Yes	Yes	Yes	Yes
Poland	Yes	Yes	Yes	Yes	Yes
Portugal	Yes	Yes	Yes	Yes	Yes
Romania	.	Yes	Yes	Yes	Yes
Russian Federation h)	.	Moscow	Moscow	Yes	Moscow
Serbia	.	.	.	2008 c)	Yes
Slovak Republic	Yes	Yes	Yes	Yes	Yes
Slovenia	Yes	Yes	Yes	Yes	Yes
Sweden	Yes	Yes	Yes	Yes	Yes
Switzerland	.	.	Yes	Yes	No
Turkey	Istanbul i)	.	6 cities i)	.	No
Ukraine	Yes	Yes	Yes	Yes	Yes
United Kingdom	Yes j)	Yes	Yes	Yes	Yes

a) Only the Flemish-speaking part of Belgium has participated since 2007.
b) Belgium (Flanders) performed the 2011 data collection already fall 2010.
c) Participated in the supplementary data collection in 2008.
d) The entity of Republika Srpska collected data during spring 2011 while the Federation of BH did so fall/winter. 
e) Out of sixteen German Bundesländer (federal states), six participated in 2003, seven in 2007 and five in 2011.
f) Data collected but not delivered.
g) Collected data fall 2011 (and thereby miss the deadline for inclusion in the printed international report).
h) Only Moscow participated in 1999, 2003 and 2011.
i) In 1995 only Istanbul was surveyed while another five major cities were added in 2003.
j) UK data for 1995 are available separately for England, Northern Ireland, Scotland and Wales.