| قيمة | فئة | حالات | |
|---|---|---|---|
| 1972 | 12 |
0.1%
|
|
| 1973 | 25 |
0.2%
|
|
| 1974 | 33 |
0.2%
|
|
| 1975 | 42 |
0.3%
|
|
| 1976 | 63 |
0.4%
|
|
| 1977 | 91 |
0.6%
|
|
| 1978 | 126 |
0.8%
|
|
| 1979 | 182 |
1.2%
|
|
| 1980 | 232 |
1.5%
|
|
| 1981 | 271 |
1.7%
|
|
| 1982 | 348 |
2.2%
|
|
| 1983 | 425 |
2.7%
|
|
| 1984 | 516 |
3.3%
|
|
| 1985 | 651 |
4.1%
|
|
| 1986 | 693 |
4.4%
|
|
| 1987 | 753 |
4.8%
|
|
| 1988 | 828 |
5.2%
|
|
| 1989 | 752 |
4.8%
|
|
| 1990 | 836 |
5.3%
|
|
| 1991 | 925 |
5.9%
|
|
| 1992 | 909 |
5.8%
|
|
| 1993 | 908 |
5.7%
|
|
| 1994 | 938 |
5.9%
|
|
| 1995 | 960 |
6.1%
|
|
| 1996 | 901 |
5.7%
|
|
| 1997 | 844 |
5.3%
|
|
| 1998 | 801 |
5.1%
|
|
| 1999 | 626 |
4%
|
|
| 2000 | 448 |
2.8%
|
|
| 2001 | 291 |
1.8%
|
|
| 2002 | 190 |
1.2%
|
|
| 2003 | 95 |
0.6%
|
|
| 2004 | 19 |
0.1%
|
|
| 2005 | 12 |
0.1%
|
|
| 2006 | 3 |
0%
|
|
| 9998 | Don't know year | 47 |
0.3%
|