Year	Wetlands of International Importance	Landscape reservations	National park	Scientific reserves	Biosphere reserves	Natural reservations	Other protected areas
1971	0	0	0	5177	0	0	0
1991	0	0	0	6868	0	0	0
1992	0	0	0	12510	0	0	0
1993	0	0	0	18542	0	0	0
1998	0	34200	0	18542	0	8009	2891
2000	4379	34200	0	18542	0	8009	2891
2003	64379	34200	0	18542	0	8009	2891
2005	79934	34200	0	18542	0	8009	2891
2013	79934	34200	33792	18542	0	8009	2891
2018	79934	34200	33792	18542	14771	8009	2891