Year	hectares
1961	3640000
1962	3660000
1963	3680000
1964	3700000
1965	3720000
1966	3740000
1967	3760000
1968	3780000
1969	3800000
1970	3902000
1971	3952000
1972	4002000
1973	4102000
1974	4152000
1975	4152000
1976	4198000
1977	4095000
1978	3992000
1979	3889000
1980	3836000
1981	3733000
1982	3580000
1983	3528000
1984	3475000
1985	3444000
1986	3354000
1987	3076000
1988	3059000
1989	3070000
1990	2802000
1991	2685000
1992	2440000
1993	2304000
1994	2276000
1995	2120000
1996	1985000
1997	1982000
1998	1979000
1999	1800000
2000	1750000
2001	1750000
2002	1650000
2003	1500000
2004	1500000
2005	1450000
2006	1350000
2007	1262000
2008	1265993
2009	1269986
2010	1272979
2011	1276971
2012	1280964
2013	1284957
2014	1288950
2015	1291943
2016	1295936
2017	1299929
2018	1303921
2019	1306914
2020	1310907
2021	1313900