Last Updated: 01/22/2021
Percentage of Investigations with a Given Range of Numbers of Respondents by Calendar Year (Updated Annually)
| No. of respondents |
2009
|
2010
|
2011
|
2012
|
2013
|
2014
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1-5 | 58 | 61 | 58 | 53 | 61 | 54 | 69 | 61 | 60 | 54 | 47 | 42 |
| 6-10 | 16 | 19 | 16 | 15 | 17 | 10 | 17 | 19 | 25 | 16 | 19 | 27 |
| 11-15 | 16 | 7 | 13 | 10 | 15 | 23 | 8 | 5 | 7 | 6 | 11 | 12.5 |
| 16-20 | 7 | 7 | 3 | 2 | 0 | 0 | 1 | 4 | 5 | 8 | 4 | 2 |
| 21-30 | 3 | 4 | 6 | 13 | 7 | 5 | 1 | 4 | 3 | 8 | 15 | 12.5 |
| 30-50 | 0 | 2 | 4 | 7 | 0 | 8 | 0 | 7 | 0 | 8 | 4 | 4 |
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