Year	hectares
1961	4600000
1962	4650000
1963	4700000
1964	4750000
1965	4800000
1966	4800000
1967	4850000
1968	4850000
1969	4850000
1970	4848000
1971	4848000
1972	5000000
1973	5000000
1974	5100000
1975	5100000
1976	5100000
1977	5100000
1978	5200000
1979	5250000
1980	5250000
1981	5250000
1982	5250000
1983	5250000
1984	5250000
1985	5250000
1986	5250000
1987	5250000
1988	5300000
1989	5000000
1990	5000000
1991	5400000
1992	5300000
1993	5600000
1994	5050000
1995	4800000
1996	4800000
1997	4400000
1998	4400000
1999	4300000
2000	4300000
2001	4300000
2002	4500000
2003	4500000
2004	4500000
2005	4650000
2006	4800000
2007	4950000
2008	4000000
2009	3650000
2010	4000000
2011	4300000
2012	4318500
2013	4563750
2014	4969000
2015	4969000
2016	4969000
2017	4969000
2018	4969000
2019	4969000
2020	4969000
2021	4969000