Year	hectares
1961	10621000
1962	10634000
1963	10741000
1964	11291000
1965	12245000
1966	10102000
1967	10635000
1968	11039000
1969	14400000
1970	12424000
1971	11736500
1972	8869500
1973	12504500
1974	10325000
1975	8632000
1976	9874000
1977	7460000
1978	6554000
1979	6113000
1980	7165000
1981	4864500
1982	5186000
1983	5785000
1984	8294000
1985	9527000
1986	12675000
1987	13231000
1988	12685000
1989	14372700
1990	15400000
1991	17014000
1992	16836000
1993	17423700
1994	17993000
1995	18598000
1996	17752600
1997	18476000
1998	18339000
1999	18079200
2000	18242000
2001	16286000
2002	17027000
2003	17371000
2004	17716000
2005	18310000
2006	19147000
2007	19410000
2008	18899000
2009	13890000
2010	16132376
2011	15512438
2012	15316190
2013	15888765
2014	16948908
2015	16541075
2016	17443380
2017	18676572
2018	18195673
2019	18299733
2020	18025044
2021	18473891
2022	18350981