| Value | Category | Cases | |
|---|---|---|---|
| 1977 | 1 |
0%
|
|
| 1978 | 3 |
0%
|
|
| 1979 | 11 |
0.1%
|
|
| 1980 | 35 |
0.3%
|
|
| 1981 | 31 |
0.2%
|
|
| 1982 | 60 |
0.4%
|
|
| 1983 | 76 |
0.6%
|
|
| 1984 | 89 |
0.7%
|
|
| 1985 | 106 |
0.8%
|
|
| 1986 | 131 |
1%
|
|
| 1987 | 161 |
1.2%
|
|
| 1988 | 195 |
1.5%
|
|
| 1989 | 281 |
2.1%
|
|
| 1990 | 269 |
2%
|
|
| 1991 | 212 |
1.6%
|
|
| 1992 | 198 |
1.5%
|
|
| 1993 | 233 |
1.7%
|
|
| 1994 | 220 |
1.6%
|
|
| 1995 | 242 |
1.8%
|
|
| 1996 | 238 |
1.8%
|
|
| 1997 | 241 |
1.8%
|
|
| 1998 | 237 |
1.8%
|
|
| 1999 | 294 |
2.2%
|
|
| 2000 | 300 |
2.2%
|
|
| 2001 | 253 |
1.9%
|
|
| 2002 | 232 |
1.7%
|
|
| 2003 | 246 |
1.8%
|
|
| 2004 | 290 |
2.2%
|
|
| 2005 | 295 |
2.2%
|
|
| 2006 | 315 |
2.4%
|
|
| 2007 | 307 |
2.3%
|
|
| 2008 | 379 |
2.8%
|
|
| 2009 | 403 |
3%
|
|
| 2010 | 414 |
3.1%
|
|
| 2011 | 353 |
2.6%
|
|
| 2012 | 371 |
2.8%
|
|
| 2013 | 364 |
2.7%
|
|
| 2014 | 19 |
0.1%
|
|
| 9997 | Inconsistent | 0 |
0%
|
| 9998 | DK | 106 |
0.8%
|
| 9999 | Missing | 1 |
0%
|
| Sysmiss | 5155 |