Year	hectares
1961	432000
1962	436000
1963	440000
1964	443000
1965	460000
1966	475000
1967	488000
1968	500000
1969	510000
1970	521000
1971	530000
1972	540000
1973	548000
1974	557000
1975	563000
1976	575000
1977	580000
1978	583000
1979	583000
1980	585000
1981	588000
1982	589000
1983	589000
1984	589000
1985	589000
1986	589000
1987	590000
1988	590000
1989	582000
1990	579000
1991	578000
1992	578000
1993	577000
1994	577000
1995	577000
1996	577000
1997	578000
1998	577000
1999	577000
2000	578000
2001	578000
2002	578000
2003	578000
2004	578000
2005	538000
2006	584000
2007	578000
2008	610000
2009	609000
2010	626000
2011	622000
2012	619100
2013	617100
2014	615600
2015	615100
2016	620300
2017	612000
2018	611346
2019	610000
2020	599600
2021	599900