| Value | Category | Cases | |
|---|---|---|---|
| 1951 | 2 |
0%
|
|
| 1959 | 3 |
0%
|
|
| 1960 | 70 |
0.2%
|
|
| 1961 | 242 |
0.8%
|
|
| 1992 | 1 |
0%
|
|
| 1993 | 1 |
0%
|
|
| 1994 | 43 |
0.1%
|
|
| 1995 | 339 |
1.1%
|
|
| 1996 | 330 |
1.1%
|
|
| 1997 | 355 |
1.2%
|
|
| 2003 | 1 |
0%
|
|
| 2004 | 141 |
0.5%
|
|
| 2005 | 1068 |
3.5%
|
|
| 2006 | 1078 |
3.5%
|
|
| 2007 | 987 |
3.2%
|
|
| 2008 | 1100 |
3.6%
|
|
| 2009 | 992 |
3.2%
|
|
| 2010 | 905 |
2.9%
|
|
| 2011 | 591 |
1.9%
|
|
| 9998 | DK | 34 |
0.1%
|
| 9999 | Missing | 22494 |
73.1%
|