| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 167 |
25.9%
|
| 1 | One hour or less | 6 |
0.9%
|
| 2 | 3 |
0.5%
|
|
| 3 | 1 |
0.2%
|
|
| 4 | 1 |
0.2%
|
|
| 5 | 1 |
0.2%
|
|
| 6 | 1 |
0.2%
|
|
| 7 | 3 |
0.5%
|
|
| 8 | 2 |
0.3%
|
|
| 10 | 2 |
0.3%
|
|
| 12 | 1 |
0.2%
|
|
| 15 | 1 |
0.2%
|
|
| 16 | 1 |
0.2%
|
|
| 18 | 1 |
0.2%
|
|
| 20 | 2 |
0.3%
|
|
| 24 | 8 |
1.2%
|
|
| 25 | 1 |
0.2%
|
|
| 30 | 104 |
16.1%
|
|
| 31 | 2 |
0.3%
|
|
| 32 | 8 |
1.2%
|
|
| 33 | 4 |
0.6%
|
|
| 34 | 3 |
0.5%
|
|
| 35 | 15 |
2.3%
|
|
| 36 | 12 |
1.9%
|
|
| 38 | 2 |
0.3%
|
|
| 40 | 58 |
9%
|
|
| 42 | 2 |
0.3%
|
|
| 44 | 2 |
0.3%
|
|
| 45 | 9 |
1.4%
|
|
| 48 | 31 |
4.8%
|
|
| 49 | 1 |
0.2%
|
|
| 50 | 22 |
3.4%
|
|
| 52 | 2 |
0.3%
|
|
| 55 | 1 |
0.2%
|
|
| 56 | 3 |
0.5%
|
|
| 58 | 1 |
0.2%
|
|
| 60 | 19 |
2.9%
|
|
| 64 | 1 |
0.2%
|
|
| 65 | 1 |
0.2%
|
|
| 70 | 5 |
0.8%
|
|
| 72 | 18 |
2.8%
|
|
| 73 | 1 |
0.2%
|
|
| 80 | 21 |
3.3%
|
|
| 82 | 1 |
0.2%
|
|
| 83 | 1 |
0.2%
|
|
| 85 | 1 |
0.2%
|
|
| 90 | 1 |
0.2%
|
|
| 92 | 1 |
0.2%
|
|
| 96 | 7 |
1.1%
|
|
| 100 | 4 |
0.6%
|
|
| 120 | 19 |
2.9%
|
|
| 128 | 1 |
0.2%
|
|
| 130 | 1 |
0.2%
|
|
| 150 | 3 |
0.5%
|
|
| 156 | 1 |
0.2%
|
|
| 160 | 4 |
0.6%
|
|
| 168 | 3 |
0.5%
|
|
| 180 | 1 |
0.2%
|
|
| 188 | 1 |
0.2%
|
|
| 200 | 6 |
0.9%
|
|
| 208 | 3 |
0.5%
|
|
| 240 | 1 |
0.2%
|
|
| 248 | 1 |
0.2%
|
|
| 256 | 1 |
0.2%
|
|
| 276 | 1 |
0.2%
|
|
| 280 | 3 |
0.5%
|
|
| 288 | 7 |
1.1%
|
|
| 300 | 3 |
0.5%
|
|
| 320 | 1 |
0.2%
|
|
| 360 | 6 |
0.9%
|
|
| 400 | 1 |
0.2%
|
|
| 440 | 1 |
0.2%
|
|
| 450 | 2 |
0.3%
|
|
| 480 | 5 |
0.8%
|
|
| 672 | 1 |
0.2%
|
|
| 1000 | 1 |
0.2%
|
|
| 2304 | 1 |
0.2%
|