| Value |
Category |
| 0 |
|
| 12 |
|
| 98 |
NSP |
| 99 |
ND |
| 2002 |
|
| 2004 |
|
| 2005 |
|
| 2006 |
|
| 2007 |
|
| 2008 |
|
| 2009 |
|
| 2010 |
|
| 2011 |
|
| 2012 |
|
| 9999 |
|
| Sysmiss |
|
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.