| Value | Category | Cases | |
|---|---|---|---|
| 1 | 1980 | 1 |
0.7%
|
| 2 | 1981 | 2 |
1.4%
|
| 3 | 1982 | 1 |
0.7%
|
| 4 | 1983 | 1 |
0.7%
|
| 5 | 1984 | 1 |
0.7%
|
| 6 | 1985 | 2 |
1.4%
|
| 7 | 1986 | 1 |
0.7%
|
| 8 | 1987 | 1 |
0.7%
|
| 9 | 1989 | 4 |
2.8%
|
| 10 | 1991 | 1 |
0.7%
|
| 11 | 1992 | 1 |
0.7%
|
| 12 | 1993 | 3 |
2.1%
|
| 13 | 1994 | 3 |
2.1%
|
| 14 | 1995 | 4 |
2.8%
|
| 15 | 1996 | 1 |
0.7%
|
| 16 | 1998 | 2 |
1.4%
|
| 17 | 1999 | 3 |
2.1%
|
| 18 | 2000 | 4 |
2.8%
|
| 19 | 2001 | 1 |
0.7%
|
| 20 | 2002 | 1 |
0.7%
|
| 21 | 2004 | 1 |
0.7%
|
| 22 | 2015 | 1 |
0.7%
|
| 23 | 2016 | 1 |
0.7%
|
| 24 | 2018 | 3 |
2.1%
|
| 25 | 2019 | 2 |
1.4%
|
| 26 | 2020 | 1 |
0.7%
|
| 27 | 2021 | 2 |
1.4%
|
| Missing value | 92 |
65.2%
|