Year	hectares
1961	6400000
1962	6400000
1963	6400000
1964	6380000
1965	6360000
1966	6360000
1967	6370000
1968	6400000
1969	6420000
1970	6440000
1971	6470000
1972	6500000
1973	6520000
1974	6550000
1975	6545000
1976	6590000
1977	6610000
1978	6620000
1979	6600000
1980	6620000
1981	6650000
1982	6640000
1983	6650000
1984	6670000
1985	6700000
1986	6720000
1987	6700000
1988	6700000
1989	6700000
1990	6670000
1991	6680000
1992	6700000
1993	6700000
1994	6700000
1995	6700000
1996	6700000
1997	6700000
1998	6700000
1999	6700000
2000	6700000
2001	6700000
2002	6700000
2003	6700000
2004	6700000
2005	6700000
2006	6700000
2007	6700000
2008	6750000
2009	7932000
2010	9114000
2011	10296000
2012	11476000
2013	11785000
2014	12314000
2015	12460000
2016	12662000
2017	13241000
2018	13494000
2019	13680000
2020	13680000
2021	13680000