Value |
Category |
1 |
1970 |
2 |
1980 |
3 |
1986 |
4 |
1989 |
5 |
1990 |
6 |
1992 |
7 |
1993 |
8 |
1994 |
9 |
1996 |
10 |
1997 |
11 |
1998 |
12 |
1999 |
13 |
2000 |
14 |
2001 |
15 |
2002 |
16 |
2004 |
17 |
2005 |
18 |
2006 |
19 |
2007 |
20 |
2008 |
21 |
2009 |
22 |
2010 |
23 |
2011 |
24 |
2012 |
25 |
2013 |
26 |
2014 |
27 |
2015 |
28 |
2016 |
29 |
2017 |
30 |
2018 |
31 |
2019 |
32 |
2020 |
33 |
2021 |
34 |
Don't know |
35 |
Refused to answer |
36 |
Outlier set to missing |
37 |
Inconsistency set to missing |
38 |
Not applicable |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.