International Standard Classification of Education (ISCED 1997)
0 Total of all level ISCED97 and no education
1 No education
2 All ISCED 1997 levels
3 Pre-primary education (level 0)
4 Primary education or first stage of basic education (level 1)
5 Lower secondary or second stage of basic education (level 2)
6 Upper secondary education (level 3)
7 Upper secondary education (level 3A), programmes designed to provide direct access to level 5A
8 Upper secondary education (level 3B), programmes designed to provide direct access to level 5B
9 Upper secondary education (level 3C), programmes not designed to lead directly to levels 5A or 5B; they lead directly to labour market, level 4 or other level 3 programmes
a Post-secondary non-tertiary education (level 4)
b First and second stage of tertiary education (levels 5 and 6)
c First stage of tertiary education, programmes that are theoretically based/research preparatory or giving access to professions with high skills requirements (level 5A)
d First stage of tertiary education, programmes which are practically oriented and occupationally specific (level 5B)
e Second stage of tertiary education leading to an advanced research qualification (level 6)
f Unknown
Country of citizenship
0 EU15 countries (1995-2004) except reporting country
1 Extra-EU15 (1995-2004)
2 Foreign country
3 Reporting country
4 Total
5 Unknown
Age class
00 Total
01 Less than 15 years
02 15 years
03 16 years
04 17 years
05 18 years
06 19 years
07 From 15 to 19 years
08 20 years
09 21 years
0a 22 years
0b 23 years
0c 24 years
0d From 20 to 24 years
0e 25 years
0f 26 years
0g 27 years
0h 28 years
0i 29 years
0j From 25 to 29 years
0k 30 years
0l 31 years
0m 32 years
0n 33 years
0o 34 years
0p From 30 to 34 years
0q 35 years
0r 36 years
0s 37 years
0t 38 years
0u 39 years
0v From 35 to 39 years
0w 40 years
0x 41 years
0y 42 years
0z 43 years
10 44 years
11 From 40 to 44 years
12 45 years
13 46 years
14 47 years
15 48 years
16 49 years
17 From 45 to 49 years
18 50 years
19 51 years
1a 52 years
1b 53 years
1c 54 years
1d From 50 to 54 years
1e 55 years
1f 56 years
1g 57 years
1h 58 years
1i 59 years
1j From 55 to 59 years
1k 60 years
1l 61 years
1m 62 years
1n 63 years
1o 64 years
1p From 60 to 64 years
1q 65 years
1r 66 years
1s 67 years
1t 68 years
1u 69 years
1v From 65 to 69 years
1w 70 years
1x 71 years
1y 72 years
1z 73 years
20 74 years
21 From 70 to 74 years
22 75 years
23 76 years
24 77 years
25 78 years
26 79 years
27 From 75 to 79 years
28 80 years
29 81 years
2a 82 years
2b 83 years
2c 84 years
2d From 80 to 84 years
2e 85 years
2f 86 years
2g 87 years
2h 88 years
2i 89 years
2j From 85 to 89 years
2k 90 years
2l 91 years
2m 92 years
2n 93 years
2o 94 years
2p From 90 to 94 years
2q 95 years or over
2r Unknown
Sex
0 Total
1 Males
2 Females
Unit of measure
0 Number
Geopolitical entity (reporting)
0 Bulgaria
1 Czechia
2 Denmark
3 Germany (until 1990 former territory of the FRG)
Population by sex, age group, citizenship and educational attainment level
methods, notes and classification
Methods 
Variables