Year	hectares
1961	3100000
1962	3100000
1963	3100000
1964	3180000
1965	3180000
1966	3180000
1967	3180000
1968	3180000
1969	3186000
1970	3193000
1971	3200000
1972	3230000
1973	3290000
1974	3340000
1975	3410000
1976	3480000
1977	3527000
1978	3413000
1979	3406000
1980	3191000
1981	3170000
1982	3160000
1983	3140000
1984	3120000
1985	3070000
1986	3030000
1987	2980000
1988	2936000
1989	2910000
1990	2909000
1991	2908000
1992	2908000
1993	2987000
1994	2830000
1995	2842000
1996	2845000
1997	2845000
1998	2879000
1999	2909000
2000	2864000
2001	2774000
2002	2771000
2003	2790000
2004	2791000
2005	2730000
2006	2763000
2007	2733000
2008	2835000
2009	2707000
2010	2823000
2011	2839000
2012	2848000
2013	2853000
2014	2588000
2015	2570000
2016	2563600
2017	2606900
2018	2569600
2019	2569600
2020	2831300
2021	2831300