| Value | Category | Cases | |
|---|---|---|---|
| 1968 | 1 |
1.1%
|
|
| 1970 | 1 |
1.1%
|
|
| 1975 | 1 |
1.1%
|
|
| 1976 | 1 |
1.1%
|
|
| 1979 | 1 |
1.1%
|
|
| 1980 | 1 |
1.1%
|
|
| 1984 | 1 |
1.1%
|
|
| 1985 | 1 |
1.1%
|
|
| 1986 | 2 |
2.2%
|
|
| 1993 | 1 |
1.1%
|
|
| 1995 | 1 |
1.1%
|
|
| 1998 | 1 |
1.1%
|
|
| 1999 | 1 |
1.1%
|
|
| 2000 | 2 |
2.2%
|
|
| 2002 | 2 |
2.2%
|
|
| 2003 | 1 |
1.1%
|
|
| 2004 | 1 |
1.1%
|
|
| 2006 | 2 |
2.2%
|
|
| 2007 | 1 |
1.1%
|
|
| 2008 | 2 |
2.2%
|
|
| 2009 | 1 |
1.1%
|
|
| 2010 | 1 |
1.1%
|
|
| 2012 | 1 |
1.1%
|
|
| 2013 | 1 |
1.1%
|
|
| 2014 | 1 |
1.1%
|
|
| 2015 | 14 |
15.7%
|
|
| 2016 | 27 |
30.3%
|
|
| 2017 | 18 |
20.2%
|
|
| Sysmiss | 5269 |