| Value | Category | Cases | |
|---|---|---|---|
| -9 | Don't know (spontaneous) | 356 |
20.6%
|
| 1 | One hour or less | 89 |
5.2%
|
| 2 | 1 |
0.1%
|
|
| 3 | 5 |
0.3%
|
|
| 4 | 5 |
0.3%
|
|
| 5 | 22 |
1.3%
|
|
| 6 | 9 |
0.5%
|
|
| 7 | 2 |
0.1%
|
|
| 8 | 3 |
0.2%
|
|
| 10 | 23 |
1.3%
|
|
| 11 | 3 |
0.2%
|
|
| 12 | 31 |
1.8%
|
|
| 15 | 26 |
1.5%
|
|
| 16 | 4 |
0.2%
|
|
| 17 | 2 |
0.1%
|
|
| 18 | 2 |
0.1%
|
|
| 20 | 34 |
2%
|
|
| 22 | 1 |
0.1%
|
|
| 24 | 17 |
1%
|
|
| 25 | 13 |
0.8%
|
|
| 30 | 84 |
4.9%
|
|
| 31 | 6 |
0.3%
|
|
| 32 | 5 |
0.3%
|
|
| 34 | 2 |
0.1%
|
|
| 35 | 11 |
0.6%
|
|
| 36 | 21 |
1.2%
|
|
| 38 | 1 |
0.1%
|
|
| 40 | 41 |
2.4%
|
|
| 45 | 11 |
0.6%
|
|
| 48 | 7 |
0.4%
|
|
| 50 | 99 |
5.7%
|
|
| 55 | 7 |
0.4%
|
|
| 60 | 58 |
3.4%
|
|
| 65 | 2 |
0.1%
|
|
| 67 | 1 |
0.1%
|
|
| 70 | 13 |
0.8%
|
|
| 75 | 1 |
0.1%
|
|
| 80 | 25 |
1.4%
|
|
| 85 | 1 |
0.1%
|
|
| 86 | 1 |
0.1%
|
|
| 89 | 1 |
0.1%
|
|
| 90 | 14 |
0.8%
|
|
| 96 | 4 |
0.2%
|
|
| 98 | 1 |
0.1%
|
|
| 100 | 98 |
5.7%
|
|
| 110 | 3 |
0.2%
|
|
| 115 | 1 |
0.1%
|
|
| 120 | 26 |
1.5%
|
|
| 130 | 4 |
0.2%
|
|
| 135 | 1 |
0.1%
|
|
| 140 | 8 |
0.5%
|
|
| 150 | 23 |
1.3%
|
|
| 160 | 7 |
0.4%
|
|
| 165 | 3 |
0.2%
|
|
| 170 | 4 |
0.2%
|
|
| 180 | 4 |
0.2%
|
|
| 190 | 2 |
0.1%
|
|
| 200 | 42 |
2.4%
|
|
| 210 | 2 |
0.1%
|
|
| 230 | 3 |
0.2%
|
|
| 240 | 9 |
0.5%
|
|
| 250 | 11 |
0.6%
|
|
| 260 | 1 |
0.1%
|
|
| 270 | 2 |
0.1%
|
|
| 280 | 1 |
0.1%
|
|
| 288 | 1 |
0.1%
|
|
| 300 | 34 |
2%
|
|
| 320 | 1 |
0.1%
|
|
| 328 | 1 |
0.1%
|
|
| 350 | 3 |
0.2%
|
|
| 384 | 3 |
0.2%
|
|
| 400 | 25 |
1.4%
|
|
| 450 | 2 |
0.1%
|
|
| 480 | 4 |
0.2%
|
|
| 500 | 23 |
1.3%
|
|
| 550 | 1 |
0.1%
|
|
| 560 | 1 |
0.1%
|
|
| 600 | 53 |
3.1%
|
|
| 650 | 9 |
0.5%
|
|
| 700 | 20 |
1.2%
|
|
| 750 | 4 |
0.2%
|
|
| 800 | 20 |
1.2%
|
|
| 900 | 5 |
0.3%
|
|
| 960 | 1 |
0.1%
|
|
| 1000 | 14 |
0.8%
|
|
| 1100 | 3 |
0.2%
|
|
| 1200 | 33 |
1.9%
|
|
| 1300 | 14 |
0.8%
|
|
| 1400 | 28 |
1.6%
|
|
| 1500 | 84 |
4.9%
|
|
| 1600 | 2 |
0.1%
|
|
| 1800 | 1 |
0.1%
|
|
| 1920 | 4 |
0.2%
|
|
| 2000 | 4 |
0.2%
|
|
| 2500 | 1 |
0.1%
|
|
| 3500 | 1 |
0.1%
|
|
| 5000 | 1 |
0.1%
|
|
| 7000 | 1 |
0.1%
|
|
| 8000 | 2 |
0.1%
|
|
| 8760 | 1 |
0.1%
|