Year	hectares
1961	311000
1962	380000
1963	394000
1964	413000
1965	418200
1966	398500
1967	406900
1968	410300
1969	414000
1970	418100
1971	414800
1972	412300
1973	419600
1974	419500
1975	433100
1976	444400
1977	482400
1978	565200
1979	583400
1980	554700
1981	539600
1982	528100
1983	585800
1984	617480
1985	633410
1986	629710
1987	622832
1988	641628
1989	672286
1990	654090
1991	613190
1992	592628
1993	557823
1994	455698
1995	357446
1996	335235
1997	319387
1998	308931
1999	281602
2000	186090
2001	202456
2002	217263
2003	212006
2004	177524
2005	164100
2006	126201
2007	121777
2008	153953
2009	252398
2010	259113
2011	299927
2012	306235
2013	293262
2014	315033
2015	381209
2016	377802
2017	282228
2018	328979
2019	340680
2020	353118
2021	432747
2022	385021