Samples analysed by IZSLER (number of head)
Survey date 2018 2019 2020
January
8.180
7.774
7.671
February
8.045
7.865
7.612
March
8.146
8.388
4.384
April
8.185
8.016
4.172
May
8.219
8.271
7.260
June
8.041
7.842
7.458
July
7.865
7.790
7.513
August
7.606
7.651
7.422
September
7.827
7.969
8.180
October
8.032
8.093
8.205
November
7.889
7.984
7.622
December
7.702
7.635
7.594