Year	hectares
1961	10287500
1962	8699220
1963	11468110
1964	12281330
1965	9866080
1966	11122075
1967	12185670
1968	12408430
1969	11884800
1970	11221810
1971	12321590
1972	11702050
1973	11688950
1974	11538000
1975	11780050
1976	13051770
1977	10542300
1978	11425900
1979	11131900
1980	9952900
1981	12377000
1982	14052800
1983	13599000
1984	12337485
1985	11508250
1986	10119555
1987	9631373
1988	8835955
1989	8515784
1990	8504919
1991	9386545
1992	8748790
1993	8370535
1994	8619890
1995	9061870
1996	8872500
1997	12189268
1998	10603135
1999	9574275
2000	10972298
2001	10785378
2002	10702110
2003	9814395
2004	9345371
2005	10291886
2006	8701693
2007	9796747
2008	10921189
2009	8046915
2010	8155785
2011	11077808
2012	11380945
2013	10581024
2014	10522262
2015	11713405
2016	11751642
2017	14135508
2018	15112335
2019	15273923
2020	16595690
2021	16886709
2022	18063791