Year	hectares
1961	1885000
1962	1935000
1963	1985000
1964	2035000
1965	2065000
1966	2135000
1967	2185000
1968	2235000
1969	2285000
1970	2335000
1971	2385000
1972	2415000
1973	2415000
1974	2465000
1975	2465000
1976	2465000
1977	2465000
1978	2465000
1979	2465000
1980	2505000
1981	2545000
1982	2585000
1983	2625000
1984	2665000
1985	2705000
1986	2745000
1987	2790000
1988	2830000
1989	2870000
1990	2910000
1991	2950000
1992	2990000
1993	3030000
1994	3100000
1995	3110000
1996	3400000
1997	3500000
1998	3400000
1999	3550000
2000	3600000
2001	3600000
2002	3650000
2003	3650000
2004	3800000
2005	3900000
2006	4100000
2007	4000000
2008	4250000
2009	4100000
2010	4000000
2011	4200000
2012	4000000
2013	4000000
2014	4000000
2015	4000000
2016	4000000
2017	4000000
2018	4000000
2019	4000000
2020	4000000
2021	4000000