| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 382 |
31.4%
|
| 1 | One hour or less | 27 |
2.2%
|
| 2 | 1 |
0.1%
|
|
| 3 | 2 |
0.2%
|
|
| 4 | 3 |
0.2%
|
|
| 5 | 2 |
0.2%
|
|
| 6 | 2 |
0.2%
|
|
| 10 | 2 |
0.2%
|
|
| 12 | 1 |
0.1%
|
|
| 14 | 1 |
0.1%
|
|
| 15 | 2 |
0.2%
|
|
| 16 | 1 |
0.1%
|
|
| 18 | 1 |
0.1%
|
|
| 20 | 9 |
0.7%
|
|
| 24 | 9 |
0.7%
|
|
| 25 | 6 |
0.5%
|
|
| 30 | 104 |
8.6%
|
|
| 32 | 15 |
1.2%
|
|
| 33 | 8 |
0.7%
|
|
| 34 | 2 |
0.2%
|
|
| 35 | 32 |
2.6%
|
|
| 36 | 8 |
0.7%
|
|
| 37 | 4 |
0.3%
|
|
| 40 | 85 |
7%
|
|
| 41 | 1 |
0.1%
|
|
| 42 | 1 |
0.1%
|
|
| 44 | 1 |
0.1%
|
|
| 45 | 15 |
1.2%
|
|
| 48 | 12 |
1%
|
|
| 50 | 68 |
5.6%
|
|
| 53 | 1 |
0.1%
|
|
| 55 | 3 |
0.2%
|
|
| 60 | 52 |
4.3%
|
|
| 65 | 2 |
0.2%
|
|
| 70 | 17 |
1.4%
|
|
| 72 | 6 |
0.5%
|
|
| 80 | 45 |
3.7%
|
|
| 85 | 2 |
0.2%
|
|
| 90 | 13 |
1.1%
|
|
| 96 | 3 |
0.2%
|
|
| 98 | 1 |
0.1%
|
|
| 100 | 55 |
4.5%
|
|
| 120 | 15 |
1.2%
|
|
| 125 | 1 |
0.1%
|
|
| 130 | 4 |
0.3%
|
|
| 140 | 3 |
0.2%
|
|
| 150 | 33 |
2.7%
|
|
| 160 | 9 |
0.7%
|
|
| 168 | 1 |
0.1%
|
|
| 170 | 3 |
0.2%
|
|
| 176 | 1 |
0.1%
|
|
| 179 | 1 |
0.1%
|
|
| 180 | 6 |
0.5%
|
|
| 190 | 2 |
0.2%
|
|
| 192 | 1 |
0.1%
|
|
| 200 | 50 |
4.1%
|
|
| 230 | 2 |
0.2%
|
|
| 240 | 8 |
0.7%
|
|
| 250 | 13 |
1.1%
|
|
| 260 | 1 |
0.1%
|
|
| 280 | 4 |
0.3%
|
|
| 300 | 17 |
1.4%
|
|
| 322 | 1 |
0.1%
|
|
| 360 | 1 |
0.1%
|
|
| 400 | 6 |
0.5%
|
|
| 450 | 1 |
0.1%
|
|
| 480 | 1 |
0.1%
|
|
| 500 | 6 |
0.5%
|
|
| 600 | 4 |
0.3%
|
|
| 650 | 1 |
0.1%
|
|
| 700 | 2 |
0.2%
|
|
| 750 | 1 |
0.1%
|
|
| 800 | 2 |
0.2%
|
|
| 900 | 1 |
0.1%
|
|
| 1000 | 1 |
0.1%
|
|
| 1350 | 1 |
0.1%
|
|
| 1400 | 1 |
0.1%
|
|
| 1500 | 3 |
0.2%
|
|
| 3500 | 1 |
0.1%
|