Year	hectares
1961	2444000
1962	2450000
1963	2455000
1964	2460000
1965	2470000
1966	2474000
1967	2500000
1968	2600000
1969	2700000
1970	2785000
1971	2785000
1972	2800000
1973	2850000
1974	2850000
1975	2870000
1976	2870000
1977	2870000
1978	2870000
1979	2870000
1980	2870000
1981	2920000
1982	3000000
1983	3000000
1984	3100000
1985	3150000
1986	3200000
1987	3300000
1988	3350000
1989	3400000
1990	3450000
1991	3500000
1992	3520000
1993	3520000
1994	3570000
1995	3650000
1996	3750000
1997	3900000
1998	4000000
1999	3950000
2000	3900000
2001	4000000
2002	4450000
2003	4500000
2004	4600000
2005	5000000
2006	4900000
2007	5200000
2008	5400000
2009	5500000
2010	5650000
2011	5650000
2012	5650000
2013	5650000
2014	5650000
2015	5650000
2016	5650000
2017	5650000
2018	5650000
2019	5650000
2020	5650000
2021	5650000