Season

Maximum Number of observed Cranes (×10³)

1996/97

22

1997/98

17

1999/20

20

2001/02

27

2003/04

23

2004/05

22

2005/06

33

2006/07

35

2007/08

47

2008/09

50

2009/10

35

2010/11

36

2011/12

37

2012/13

37

2013/14

35

2014/15

37

2015/16

40