| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know | 0 |
0%
|
| -8 | Refused | 0 |
0%
|
| -5 | Not applicable | 0 |
0%
|
| -3 | Missing | 0 |
0%
|
| 1 | Less than 1 year | 0 |
0%
|
| 1952 | 1 |
0.5%
|
|
| 1969 | 1 |
0.5%
|
|
| 1972 | 1 |
0.5%
|
|
| 1975 | 1 |
0.5%
|
|
| 1979 | 1 |
0.5%
|
|
| 1983 | 1 |
0.5%
|
|
| 1984 | 1 |
0.5%
|
|
| 1986 | 1 |
0.5%
|
|
| 1988 | 1 |
0.5%
|
|
| 1989 | 1 |
0.5%
|
|
| 1990 | 1 |
0.5%
|
|
| 1991 | 1 |
0.5%
|
|
| 1994 | 3 |
1.4%
|
|
| 1995 | 1 |
0.5%
|
|
| 1996 | 3 |
1.4%
|
|
| 1997 | 2 |
0.9%
|
|
| 1998 | 5 |
2.3%
|
|
| 1999 | 3 |
1.4%
|
|
| 2000 | 2 |
0.9%
|
|
| 2001 | 3 |
1.4%
|
|
| 2002 | 2 |
0.9%
|
|
| 2003 | 2 |
0.9%
|
|
| 2004 | 4 |
1.8%
|
|
| 2005 | 2 |
0.9%
|
|
| 2006 | 4 |
1.8%
|
|
| 2007 | 5 |
2.3%
|
|
| 2008 | 4 |
1.8%
|
|
| 2009 | 2 |
0.9%
|
|
| 2010 | 4 |
1.8%
|
|
| 2011 | 5 |
2.3%
|
|
| 2012 | 8 |
3.7%
|
|
| 2013 | 18 |
8.2%
|
|
| 2014 | 20 |
9.1%
|
|
| 2015 | 4 |
1.8%
|
|
| 3333 | Missing | 6 |
2.7%
|
| 5555 | Not applicable | 0 |
0%
|
| 8888 | Refused | 0 |
0%
|
| 9999 | Don't know | 95 |
43.4%
|
| Sysmiss | 1378 |