Year	hectares
1961	521000
1962	515000
1963	520000
1964	511000
1965	507000
1966	502000
1967	535000
1968	515000
1969	519000
1970	480250
1971	445100
1972	645670
1973	387050
1974	395070
1975	511100
1976	614300
1977	616800
1978	582100
1979	616600
1980	575200
1981	723200
1982	758500
1983	558700
1984	769600
1985	687500
1986	636900
1987	783000
1988	860200
1989	825300
1990	549150
1991	455800
1992	413840
1993	364500
1994	987400
1995	576080
1996	559040
1997	634648
1998	479290
1999	513271
2000	535373
2001	527960
2002	573983
2003	585518
2004	630641
2005	546473
2006	527219
2007	325163
2008	413598
2009	551531
2010	618634
2011	259997
2012	323821
2013	397538
2014	440262
2015	447104
2016	280701
2017	344488
2018	330644
2019	353513
2020	353539
2021	353560
2022	353538