| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 56 |
10.4%
|
| 1 | One hour or less | 3 |
0.6%
|
| 10 | 6 |
1.1%
|
|
| 12 | 2 |
0.4%
|
|
| 16 | 2 |
0.4%
|
|
| 20 | 3 |
0.6%
|
|
| 24 | 8 |
1.5%
|
|
| 30 | 45 |
8.3%
|
|
| 31 | 12 |
2.2%
|
|
| 32 | 17 |
3.1%
|
|
| 33 | 11 |
2%
|
|
| 34 | 9 |
1.7%
|
|
| 35 | 30 |
5.5%
|
|
| 36 | 9 |
1.7%
|
|
| 37 | 1 |
0.2%
|
|
| 38 | 3 |
0.6%
|
|
| 40 | 20 |
3.7%
|
|
| 42 | 2 |
0.4%
|
|
| 45 | 8 |
1.5%
|
|
| 47 | 1 |
0.2%
|
|
| 48 | 8 |
1.5%
|
|
| 50 | 6 |
1.1%
|
|
| 54 | 1 |
0.2%
|
|
| 55 | 1 |
0.2%
|
|
| 56 | 1 |
0.2%
|
|
| 60 | 9 |
1.7%
|
|
| 65 | 5 |
0.9%
|
|
| 70 | 1 |
0.2%
|
|
| 72 | 1 |
0.2%
|
|
| 74 | 1 |
0.2%
|
|
| 75 | 2 |
0.4%
|
|
| 80 | 11 |
2%
|
|
| 85 | 1 |
0.2%
|
|
| 90 | 1 |
0.2%
|
|
| 92 | 1 |
0.2%
|
|
| 96 | 3 |
0.6%
|
|
| 100 | 46 |
8.5%
|
|
| 120 | 42 |
7.8%
|
|
| 125 | 1 |
0.2%
|
|
| 130 | 14 |
2.6%
|
|
| 140 | 8 |
1.5%
|
|
| 150 | 24 |
4.4%
|
|
| 160 | 1 |
0.2%
|
|
| 170 | 2 |
0.4%
|
|
| 180 | 5 |
0.9%
|
|
| 192 | 1 |
0.2%
|
|
| 200 | 27 |
5%
|
|
| 210 | 2 |
0.4%
|
|
| 230 | 2 |
0.4%
|
|
| 240 | 3 |
0.6%
|
|
| 250 | 7 |
1.3%
|
|
| 260 | 2 |
0.4%
|
|
| 270 | 1 |
0.2%
|
|
| 280 | 1 |
0.2%
|
|
| 288 | 2 |
0.4%
|
|
| 300 | 10 |
1.8%
|
|
| 310 | 1 |
0.2%
|
|
| 320 | 2 |
0.4%
|
|
| 340 | 1 |
0.2%
|
|
| 350 | 1 |
0.2%
|
|
| 380 | 2 |
0.4%
|
|
| 384 | 1 |
0.2%
|
|
| 400 | 1 |
0.2%
|
|
| 450 | 1 |
0.2%
|
|
| 480 | 4 |
0.7%
|
|
| 500 | 5 |
0.9%
|
|
| 600 | 5 |
0.9%
|
|
| 700 | 1 |
0.2%
|
|
| 960 | 1 |
0.2%
|
|
| 1000 | 4 |
0.7%
|
|
| 1152 | 1 |
0.2%
|
|
| 1500 | 1 |
0.2%
|
|
| 1920 | 1 |
0.2%
|
|
| 2000 | 2 |
0.4%
|
|
| 2016 | 1 |
0.2%
|
|
| 4000 | 1 |
0.2%
|
|
| 4080 | 1 |
0.2%
|
|
| 8700 | 1 |
0.2%
|
|
| Sysmiss | 425 |