Norwegian Lichen Database - Statistics
Number of records collected each decade (field notes, field investigations, and undated collections excluded)
1791-1800: 9
1801-1810: 257
1811-1820: 311
1821-1830: 954
1831-1840: 821
1841-1850: 281
1851-1860: 1325
1861-1870: 8939
1871-1880: 3238
1881-1890: 1261
1891-1900: 2937
1901-1910: 15839
1911-1920: 17904
1921-1930: 13328
1931-1940: 19426
1941-1950: 8813
1951-1960: 6012
1961-1970: 11130
1971-1980: 27501
1981-1990: 22851
1991-2000: 37637
2001- : 55318