Year	hectares
1961	5550000
1962	5550000
1963	5550000
1964	5550000
1965	5550000
1966	5550000
1967	5570000
1968	5590000
1969	5600000
1970	5630000
1971	5630000
1972	5650000
1973	5680000
1974	5700000
1975	5700000
1976	5900000
1977	5980000
1978	5999000
1979	5970000
1980	5940000
1981	5910000
1982	5880000
1983	5850000
1984	5820000
1985	5616000
1986	5570000
1987	5527000
1988	5460000
1989	5400000
1990	5339000
1991	5368000
1992	5506000
1993	5516000
1994	5464000
1995	5403000
1996	5554000
1997	5668000
1998	5763000
1999	6000000
2000	6200000
2001	6649000
2002	6600000
2003	6581000
2004	6469500
2005	6358000
2006	6348000
2007	6309600
2008	6282500
2009	6300000
2010	6437400
2011	6437600
2012	6401300
2013	6422800
2014	6409500
2015	7002800
2016	6998000
2017	6988300
2018	6952100
2019	6784000
2020	6787000
2021	6787000