Time range	Vertebrates	Invertebrates	Primary producers	Vertebrates (cumulative)	Invertebrates (cumulative)	Primary producers (cumulative)	Region
1949-1951	5	7	4	5	12	16	PAN-EUROPEAN
1952-1957	4	19	3	4	23	26	PAN-EUROPEAN
1958-1963	3	30	4	3	33	37	PAN-EUROPEAN
1964-1969	6	50	9	6	56	65	PAN-EUROPEAN
1970-1975	7	59	12	7	66	78	PAN-EUROPEAN
1976-1981	7	52	16	7	59	75	PAN-EUROPEAN
1982-1987	7	46	20	7	53	73	PAN-EUROPEAN
1988-1993	11	57	34	11	68	102	PAN-EUROPEAN
1994-1999	7	92	41	7	99	140	PAN-EUROPEAN
2000-2005	18	108	46	18	126	172	PAN-EUROPEAN
2006-2011	40	78	25	40	118	143	PAN-EUROPEAN
2012-2017	36	60	16	36	96	112	PAN-EUROPEAN