Samples analysed by IZSLER (number of head)
Survey date 2020 2021 2022
January
7.671
7.454
7.285
February
7.612
4.142
7.374
March
4.384
7.568
7.249
April
4.172
7.590
7.171
May
7.260
7.435
7.815
June
7.458
7.398
7.047
July
7.513
7.415
August
7.422
7.312
September
8.180
7.314
October
8.205
7.447
November
7.622
7.386
December
7.594
7.122