2016:
soep-is-2016-a/Q146 soep-is-2016-f/Q146
2017:
2019:
2020:
soep-is-2020/Q167a soep-bip-2020-e/Q91
2022:
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ba81c13d-a6a2-5aa5-bc0b-213974558474
DE
no period:
0:
2011:
2012:
2018: