Year	hectares
1961	1383378
1962	1373709
1963	1378086
1964	1379055
1965	1393007
1966	1377911
1967	1395251
1968	1445593
1969	1486969
1970	1539265
1971	1526409
1972	1524870
1973	1530306
1974	1548414
1975	1529855
1976	1585361
1977	1598264
1978	1551823
1979	1516953
1980	1508788
1981	1488238
1982	1509809
1983	1479999
1984	1535382
1985	1489500
1986	1487000
1987	1353240
1988	1288380
1989	1269920
1990	1285220
1991	1148597
1992	1119160
1993	1101400
1994	1149108
1995	1099201
1996	1216724
1997	1268680
1998	1282813
1999	1153160
2000	1228922
2001	1174253
2002	1129270
2003	1153890
2004	1125672
2005	1023976
2006	961840
2007	981900
2008	1077700
2009	1032100
2010	948800
2011	988100
2012	991000
2013	973014
2014	1022750
2015	1017980
2016	1001680
2017	992871
2018	922110
2019	977050
2020	993340
2021	983340
2022	953470