Sample Size
Wave No. Wave Sample Households Accepted Households Response Rate
Wave 19 Jan-Apr 2020 174,405 112,289 64.38
Wave 18 Sep-Dec 2019 174,405 147,319 84.47
Wave 17 May-Aug 2019 174,405 147,868 84.78
Wave 16 Jan-Apr 2019 174,405 146,328 83.90
Wave 15 Sep-Dec 2018 173,181 147,163 84.98
Wave 14 May-Aug 2018 172,365 149,160 86.54
Wave 13 Jan-Apr 2018 169,215 143,216 84.64
Wave 12 Sep-Dec 2017 168,165 135,465 80.55
Wave 11 May-Aug 2017 160,847 132,686 82.49
Wave 10 Jan-Apr 2017 161,167 135,389 84.01
Wave 9 Sep-Dec 2016 160,511 132,777 82.72
Wave 8 May-Aug 2016 159,778 132,399 82.86
Wave 7 Jan-Apr 2016 158,624 132,908 83.79
Wave 6 Sep-Dec 2015 158,624 133,252 84.00
Wave 5 May-Aug 2015 158,666 135,746 85.55
Wave 4 Jan-Apr 2015 158,443 136,448 86.12
Wave 3 Sep-Dec 2014 157,442 136,798 86.89
Wave 2 May-Aug 2014 160,705 140,692 87.55
Wave 1 Jan-Apr 2014 166,744 145,984 87.55
Unique count All Waves 232,636 212,966 91.54
Total observations All Waves 3,142,097 2,623,887 83.51
Over
232,000
households
3
waves every year
since
2014

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