Survey on Adult Population Involvement in Learning Activities 
Formal and informal education. Absolute values
Use of the knowledge acquired in the informal education activity, by type of activity.
Units: activities

	Total	Very frequently	Somewhat frequently	Very infrequently	Never	No data recorded	
Total	10,935,940	5,556,192	3,511,080	1,118,361	455,343	294,963	
Theoretical courses taught in the classroom	3,712,377	1,860,938	1,200,685	375,153	156,022	119,578	
Courses that combine theory and practice	4,127,324	2,079,670	1,316,754	474,773	179,675	76,452	
Courses taught through distance-education	789,077	337,592	271,673	99,479	34,931	45,402	
Private tuition	313,120	137,438	124,600	37,303	.	.	
Practical training activities at the workplace	1,994,041	1,140,554	597,369	131,653	73,314	51,152	
Notes:

.Data protected by statistical secrecy

Data referring to the 12 months prior to the date of the survey.

 The symbol '.' shall be deemed as data which cannot be provided since it may be affected by sampling errors.
Source: National Statistics Institute