Year	hectares
1961	1140000
1962	1160000
1963	1180000
1964	1200000
1965	1220000
1966	1240000
1967	1260000
1968	1290000
1969	1320000
1970	1360000
1971	1400000
1972	1450000
1973	1500000
1974	1560000
1975	1620000
1976	1680000
1977	1740000
1978	1790000
1979	1840000
1980	1890000
1981	1940000
1982	1990000
1983	2200000
1984	2350000
1985	2550000
1986	2700000
1987	2900000
1988	3050000
1989	3200000
1990	3390000
1991	3579000
1992	3650000
1993	3672000
1994	3667000
1995	3655000
1996	3646000
1997	3639000
1998	3637000
1999	3594000
2000	3592000
2001	3600000
2002	3600000
2003	3600000
2004	3500000
2005	3500000
2006	3450000
2007	3446000
2008	3339000
2009	3196000
2010	3180000
2011	3159000
2012	3117000
2013	3068000
2014	3430000
2015	3490000
2016	3477000
2017	3438000
2018	3430000
2019	3430000
2020	3430000
2021	3430000