Year	hectares
1961	5000000
1962	5050000
1963	5100000
1964	5150000
1965	5200000
1966	5250000
1967	5300000
1968	5350000
1969	5400000
1970	5400000
1971	5450000
1972	5450000
1973	5450000
1974	5500000
1975	5550000
1976	5600000
1977	5666000
1978	5639000
1979	5898000
1980	5910000
1981	5910000
1982	5910000
1983	5910000
1984	5910000
1985	5910000
1986	5930000
1987	5930000
1988	5940000
1989	5940000
1990	5940000
1991	5950000
1992	5960000
1993	5960000
1994	5960000
1995	5960000
1996	5960000
1997	5960000
1998	5960000
1999	5960000
2000	5960000
2001	5960000
2002	5960000
2003	5960000
2004	5960000
2005	5963000
2006	5963000
2007	5963000
2008	5963000
2009	5963000
2010	6200000
2011	6200000
2012	6200000
2013	6200000
2014	6200000
2015	6200000
2016	6200000
2017	6200000
2018	6200000
2019	6200000
2020	6200000
2021	6200000