2016:
soep-is-2016-a/Q138 soep-is-2016-f/Q138
2017:
2019:
2020:
soep-is-2020/Q159a soep-bip-2020-e/Q83
2022:
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dc0fe7e4-3038-58cb-b6a6-a35d4a65c927
DE
no period:
0:
2011:
2012:
2018: