| Year | Cumulative area (km2) | cumulative number of sites | Region |
|---|---|---|---|
| 1800 | 49.4383 | 12 | EEA39 |
| 1838 | 50.546372 | 14 | EEA39 |
| 1858 | 57.405085 | 15 | EEA39 |
| 1899 | 57.77959 | 16 | EEA39 |
| 1900 | 199.34337 | 100 | EEA39 |
| 1905 | 199.919626 | 101 | EEA39 |
| 1909 | 479.665326 | 106 | EEA39 |
| 1911 | 479.665326 | 108 | EEA39 |
| 1912 | 487.873335 | 110 | EEA39 |
| 1913 | 487.898035 | 114 | EEA39 |
| 1914 | 658.22616 | 121 | EEA39 |
| 1915 | 658.226568 | 125 | EEA39 |
| 1916 | 658.28488 | 130 | EEA39 |
| 1917 | 658.335163 | 145 | EEA39 |
| 1918 | 1476.785949 | 156 | EEA39 |
| 1919 | 1476.793161 | 166 | EEA39 |
| 1920 | 1530.54733 | 192 | EEA39 |
| 1921 | 1696.484669 | 251 | EEA39 |
| 1922 | 2455.103326 | 272 | EEA39 |
| 1923 | 2956.553866 | 304 | EEA39 |
| 1924 | 3796.687472 | 322 | EEA39 |
| 1925 | 3805.674609 | 343 | EEA39 |
| 1926 | 3829.348157 | 364 | EEA39 |
| 1927 | 3840.833784 | 379 | EEA39 |
| 1928 | 3842.365633 | 403 | EEA39 |
| 1929 | 3902.717778 | 428 | EEA39 |
| 1930 | 3994.728042 | 467 | EEA39 |
| 1931 | 4047.521721 | 502 | EEA39 |
| 1932 | 4288.571748 | 524 | EEA39 |
| 1933 | 4401.07659 | 625 | EEA39 |
| 1934 | 4819.643969 | 660 | EEA39 |
| 1935 | 6164.123283 | 715 | EEA39 |
| 1936 | 6217.669151 | 776 | EEA39 |
| 1937 | 6286.671772 | 926 | EEA39 |
| 1938 | 6623.723668 | 1130 | EEA39 |
| 1939 | 7972.109182 | 1312 | EEA39 |
| 1940 | 8239.894217 | 1430 | EEA39 |
| 1941 | 8599.056396 | 1523 | EEA39 |
| 1942 | 8715.245317 | 1586 | EEA39 |
| 1943 | 8795.930801 | 1617 | EEA39 |
| 1944 | 8809.495719 | 1651 | EEA39 |
| 1945 | 8815.226033 | 1692 | EEA39 |
| 1946 | 8845.962555 | 1781 | EEA39 |
| 1947 | 8933.339126 | 1854 | EEA39 |
| 1948 | 9195.776038 | 1966 | EEA39 |
| 1949 | 10425.97183 | 2066 | EEA39 |
| 1950 | 10644.28598 | 2181 | EEA39 |
| 1951 | 19806.46744 | 2316 | EEA39 |
| 1952 | 22128.64973 | 2462 | EEA39 |
| 1953 | 22610.51394 | 2669 | EEA39 |
| 1954 | 27543.63986 | 2942 | EEA39 |
| 1955 | 32956.48876 | 3242 | EEA39 |
| 1956 | 39780.43839 | 3487 | EEA39 |
| 1957 | 41278.09295 | 3751 | EEA39 |
| 1958 | 84466.19628 | 4003 | EEA39 |
| 1959 | 88317.045 | 4235 | EEA39 |
| 1960 | 90153.27591 | 4483 | EEA39 |
| 1961 | 91568.34473 | 4970 | EEA39 |
| 1962 | 93503.61717 | 5240 | EEA39 |
| 1963 | 98992.03325 | 5561 | EEA39 |
| 1964 | 101397.4711 | 5867 | EEA39 |
| 1965 | 103800.7481 | 6266 | EEA39 |
| 1966 | 106999.8073 | 6513 | EEA39 |
| 1967 | 112704.2148 | 6858 | EEA39 |
| 1968 | 116504.0605 | 7363 | EEA39 |
| 1969 | 120856.143 | 7703 | EEA39 |
| 1970 | 142123.4391 | 8111 | EEA39 |
| 1971 | 147271.9894 | 8623 | EEA39 |
| 1972 | 156594.4919 | 9134 | EEA39 |
| 1973 | 273274.0471 | 9662 | EEA39 |
| 1974 | 283442.4419 | 10309 | EEA39 |
| 1975 | 294450.9391 | 10675 | EEA39 |
| 1976 | 302521.3732 | 11246 | EEA39 |
| 1977 | 315477.545 | 11954 | EEA39 |
| 1978 | 318919.6724 | 12523 | EEA39 |
| 1979 | 329967.6379 | 13132 | EEA39 |
| 1980 | 349820.8191 | 13788 | EEA39 |
| 1981 | 369969.3077 | 14698 | EEA39 |
| 1982 | 380457.4152 | 15625 | EEA39 |
| 1983 | 395527.9276 | 16768 | EEA39 |
| 1984 | 403373.5285 | 18471 | EEA39 |
| 1985 | 417048.5707 | 20025 | EEA39 |
| 1986 | 444590.6496 | 21751 | EEA39 |
| 1987 | 461259.9944 | 23390 | EEA39 |
| 1988 | 492151.8756 | 25032 | EEA39 |
| 1989 | 527376.5531 | 26520 | EEA39 |
| 1990 | 562582.8831 | 28578 | EEA39 |
| 1991 | 600652.513 | 30459 | EEA39 |
| 1992 | 656348.7315 | 33284 | EEA39 |
| 1993 | 671375.9376 | 34819 | EEA39 |
| 1994 | 685517.6285 | 37236 | EEA39 |
| 1995 | 713383.0472 | 39366 | EEA39 |
| 1996 | 730671.5719 | 41646 | EEA39 |
| 1997 | 764346.7584 | 43280 | EEA39 |
| 1998 | 800321.1662 | 45206 | EEA39 |
| 1999 | 840869.7635 | 46983 | EEA39 |
| 2000 | 866663.7816 | 49053 | EEA39 |
| 2001 | 887815.5292 | 52915 | EEA39 |
| 2002 | 921496.2298 | 56100 | EEA39 |
| 2003 | 957747.8953 | 64321 | EEA39 |
| 2004 | 1014763.295 | 68137 | EEA39 |
| 2005 | 1044874.494 | 71480 | EEA39 |
| 2006 | 1073492.855 | 75980 | EEA39 |
| 2007 | 1090632.276 | 78880 | EEA39 |
| 2008 | 1104702.995 | 81428 | EEA39 |
| 2009 | 1145331.559 | 84915 | EEA39 |
| 2010 | 1169190.398 | 90076 | EEA39 |
| 2011 | 1305532.293 | 93720 | EEA39 |
| 2012 | 1316228.874 | 95407 | EEA39 |
| 2013 | 1332843.218 | 97484 | EEA39 |
| 2014 | 1415110.49 | 100086 | EEA39 |
| 2015 | 1447333.637 | 101824 | EEA39 |
| 2016 | 1627980.7 | 103636 | EEA39 |
| 2017 | 1671842.179 | 106661 | EEA39 |
| 2018 | 1743817.817 | 110649 | EEA39 |
| 2019 | 1744116.115 | 110762 | EEA39 |
| 1800 | 49.4383 | 12 | EU28 |
| 1838 | 50.546372 | 14 | EU28 |
| 1858 | 57.405085 | 15 | EU28 |
| 1899 | 57.77959 | 16 | EU28 |
| 1900 | 125.376633 | 55 | EU28 |
| 1905 | 125.952889 | 56 | EU28 |
| 1909 | 405.698589 | 61 | EU28 |
| 1911 | 405.698589 | 63 | EU28 |
| 1912 | 413.906598 | 65 | EU28 |
| 1913 | 413.931298 | 69 | EU28 |
| 1914 | 413.931298 | 73 | EU28 |
| 1915 | 413.931298 | 76 | EU28 |
| 1916 | 413.989298 | 80 | EU28 |
| 1917 | 413.989798 | 90 | EU28 |
| 1918 | 1232.341524 | 99 | EU28 |
| 1919 | 1232.348424 | 108 | EU28 |
| 1920 | 1286.101655 | 131 | EU28 |
| 1921 | 1452.037429 | 185 | EU28 |
| 1922 | 2210.503748 | 205 | EU28 |
| 1923 | 2711.950179 | 234 | EU28 |
| 1924 | 2712.288082 | 248 | EU28 |
| 1925 | 2721.274593 | 267 | EU28 |
| 1926 | 2744.948141 | 288 | EU28 |
| 1927 | 2756.433455 | 302 | EU28 |
| 1928 | 2757.964678 | 324 | EU28 |
| 1929 | 2815.585806 | 347 | EU28 |
| 1930 | 2878.837492 | 376 | EU28 |
| 1931 | 2931.628355 | 402 | EU28 |
| 1932 | 3172.677443 | 421 | EU28 |
| 1933 | 3285.180094 | 515 | EU28 |
| 1934 | 3703.745412 | 547 | EU28 |
| 1935 | 5040.943183 | 598 | EU28 |
| 1936 | 5094.275792 | 652 | EU28 |
| 1937 | 5146.539903 | 801 | EU28 |
| 1938 | 5483.591486 | 1004 | EU28 |
| 1939 | 6831.976374 | 1184 | EU28 |
| 1940 | 7099.761409 | 1302 | EU28 |
| 1941 | 7458.923588 | 1395 | EU28 |
| 1942 | 7575.112196 | 1457 | EU28 |
| 1943 | 7655.79768 | 1488 | EU28 |
| 1944 | 7669.362286 | 1521 | EU28 |
| 1945 | 7675.0926 | 1562 | EU28 |
| 1946 | 7694.524693 | 1650 | EU28 |
| 1947 | 7781.791913 | 1716 | EU28 |
| 1948 | 7872.258825 | 1825 | EU28 |
| 1949 | 8366.751544 | 1915 | EU28 |
| 1950 | 8515.764885 | 2021 | EU28 |
| 1951 | 17569.2012 | 2142 | EU28 |
| 1952 | 19446.19041 | 2278 | EU28 |
| 1953 | 19927.454 | 2480 | EU28 |
| 1954 | 24733.50505 | 2736 | EU28 |
| 1955 | 29625.84756 | 3009 | EU28 |
| 1956 | 36376.38632 | 3243 | EU28 |
| 1957 | 37772.19895 | 3494 | EU28 |
| 1958 | 39315.15002 | 3731 | EU28 |
| 1959 | 42977.36141 | 3940 | EU28 |
| 1960 | 44535.15351 | 4173 | EU28 |
| 1961 | 45569.79783 | 4619 | EU28 |
| 1962 | 47500.26099 | 4881 | EU28 |
| 1963 | 52973.37919 | 5182 | EU28 |
| 1964 | 55347.79139 | 5462 | EU28 |
| 1965 | 57172.09552 | 5712 | EU28 |
| 1966 | 60009.36843 | 5944 | EU28 |
| 1967 | 65235.02186 | 6257 | EU28 |
| 1968 | 68905.09843 | 6691 | EU28 |
| 1969 | 72491.21579 | 6962 | EU28 |
| 1970 | 92765.11332 | 7324 | EU28 |
| 1971 | 97211.95247 | 7787 | EU28 |
| 1972 | 106176.5378 | 8263 | EU28 |
| 1973 | 117410.1236 | 8736 | EU28 |
| 1974 | 126558.165 | 9336 | EU28 |
| 1975 | 135605.0881 | 9671 | EU28 |
| 1976 | 143535.0821 | 10173 | EU28 |
| 1977 | 155369.6096 | 10838 | EU28 |
| 1978 | 158618.69 | 11303 | EU28 |
| 1979 | 168103.2195 | 11854 | EU28 |
| 1980 | 187731.9744 | 12380 | EU28 |
| 1981 | 201505.2675 | 13168 | EU28 |
| 1982 | 209867.5169 | 13979 | EU28 |
| 1983 | 222972.1727 | 14926 | EU28 |
| 1984 | 229718.0658 | 16450 | EU28 |
| 1985 | 242486.9706 | 17885 | EU28 |
| 1986 | 268536.6064 | 19497 | EU28 |
| 1987 | 283702.9685 | 20926 | EU28 |
| 1988 | 310251.5404 | 22297 | EU28 |
| 1989 | 341818.4859 | 23651 | EU28 |
| 1990 | 365164.3365 | 25344 | EU28 |
| 1991 | 400505.4332 | 26551 | EU28 |
| 1992 | 449683.8986 | 28370 | EU28 |
| 1993 | 461803.2641 | 29653 | EU28 |
| 1994 | 472641.2325 | 31241 | EU28 |
| 1995 | 498789.7735 | 32844 | EU28 |
| 1996 | 514560.1701 | 34441 | EU28 |
| 1997 | 542663.3605 | 35914 | EU28 |
| 1998 | 576096.362 | 37578 | EU28 |
| 1999 | 614931.1388 | 39180 | EU28 |
| 2000 | 636956.0752 | 41098 | EU28 |
| 2001 | 653949.8382 | 44088 | EU28 |
| 2002 | 677360.2206 | 46244 | EU28 |
| 2003 | 697080.8991 | 54118 | EU28 |
| 2004 | 721310.441 | 56801 | EU28 |
| 2005 | 737880.3981 | 59939 | EU28 |
| 2006 | 756319.1742 | 64266 | EU28 |
| 2007 | 772281.2181 | 66887 | EU28 |
| 2008 | 784403.8565 | 69236 | EU28 |
| 2009 | 819348.8622 | 72449 | EU28 |
| 2010 | 834586.8645 | 74392 | EU28 |
| 2011 | 961553.5304 | 77305 | EU28 |
| 2012 | 970004.4575 | 78904 | EU28 |
| 2013 | 985064.1252 | 80697 | EU28 |
| 2014 | 1064779.459 | 83136 | EU28 |
| 2015 | 1091786.458 | 84737 | EU28 |
| 2016 | 1268510.766 | 86344 | EU28 |
| 2017 | 1301660.465 | 88132 | EU28 |
| 2018 | 1370727.517 | 91819 | EU28 |
| 2019 | 1371025.815 | 91932 | EU28 |