Year	hectares
1961	3150000
1962	3200000
1963	3269000
1964	3785000
1965	3768000
1966	3776000
1967	3772000
1968	3780000
1969	3780000
1970	3780000
1971	3800000
1972	3850000
1973	3900000
1974	3950000
1975	4025000
1976	4072000
1977	4023000
1978	4080000
1979	4080000
1980	4080000
1981	4120000
1982	4180000
1983	4600000
1984	4800000
1985	4900000
1986	5000000
1987	5000000
1988	5000000
1989	5000000
1990	5000000
1991	5020000
1992	5040000
1993	5040000
1994	5060000
1995	5060000
1996	5060000
1997	5060000
1998	5080000
1999	5100000
2000	5300000
2001	5400000
2002	5600000
2003	5850000
2004	5950000
2005	5950000
2006	6100000
2007	6250000
2008	6450000
2009	6600000
2010	6750000
2011	6850000
2012	6900000
2013	6900000
2014	6900000
2015	6900000
2016	6900000
2017	6900000
2018	6900000
2019	6900000
2020	6900000
2021	6900000