Year	hectares
1961	355000
1962	360000
1963	365000
1964	370000
1965	375000
1966	380000
1967	385000
1968	390000
1969	395000
1970	400000
1971	405000
1972	410000
1973	415000
1974	420000
1975	425000
1976	430000
1977	435000
1978	440000
1979	445000
1980	450000
1981	455000
1982	460000
1983	465000
1984	470000
1985	475000
1986	480000
1987	485000
1988	486000
1989	486000
1990	486000
1991	486000
1992	486000
1993	486000
1994	485000
1995	485000
1996	485000
1997	484000
1998	484000
1999	484000
2000	490000
2001	681520
2002	910080
2003	1236670
2004	1437730
2005	1472020
2006	1689880
2007	1283720
2008	1372230
2009	1460970
2010	1580380
2011	1652630
2012	1471650
2013	1583650
2014	1584000
2015	1584000
2016	1584000
2017	1584000
2018	1584000
2019	1584000
2020	1584000
2021	1584000