Year	hectares
1961	754740
1962	777950
1963	800870
1964	811020
1965	773340
1966	777130
1967	788680
1968	865300
1969	868940
1970	951010
1971	967780
1972	1007030
1973	1015890
1974	1004470
1975	1055140
1976	1038620
1977	1067740
1978	1075000
1979	1082110
1980	1058000
1981	1033790
1982	994790
1983	990440
1984	951120
1985	947750
1986	894900
1987	901400
1988	911800
1989	907700
1990	930600
1991	936500
1992	926500
1993	915400
1994	927900
1995	901000
1996	892100
1997	888700
1998	874700
1999	877100
2000	868700
2001	877000
2002	967500
2003	946240
2004	946700
2005	949410
2006	890200
2007	827200
2008	870400
2009	845000
2010	854300
2011	865600
2012	868400
2013	802700
2014	804000
2015	825310
2016	826000
2017	826000
2018	826000
2019	826000
2020	826000
2021	826000