Year	hectares
1961	700000
1962	711000
1963	729000
1964	761000
1965	784000
1966	809000
1967	809000
1968	805000
1969	805000
1970	805000
1971	805000
1972	805000
1973	804000
1974	920000
1975	1040000
1976	1160000
1977	1270000
1978	1390000
1979	1500000
1980	1620000
1981	1741000
1982	1780000
1983	1820000
1984	1860000
1985	1900000
1986	1950000
1987	1990000
1988	2030000
1989	2070000
1990	2110000
1991	2150000
1992	2300000
1993	2300000
1994	2450000
1995	2600000
1996	2600000
1997	2600000
1998	2850000
1999	2950000
2000	3020000
2001	3105000
2002	3210000
2003	3280000
2004	3370000
2005	3460000
2006	3550000
2007	3640000
2008	3757000
2009	3858000
2010	3975000
2011	4122000
2012	4360000
2013	4484000
2014	4663000
2015	4868000
2016	4664000
2017	4653000
2018	4734000
2019	4734000
2020	4734000
2021	4734000