Year	hectares
1961	1806000
1962	1806000
1963	1816000
1964	1806000
1965	1806000
1966	1806000
1967	1819000
1968	1819000
1969	1819000
1970	1953000
1971	1953000
1972	2055000
1973	2165000
1974	2180000
1975	2195000
1976	2210000
1977	2225000
1978	2240000
1979	2255000
1980	2270000
1981	2288000
1982	2291600
1983	2295200
1984	2298800
1985	2302400
1986	2306000
1987	2309600
1988	2313200
1989	2316800
1990	2320400
1991	2324000
1992	2327300
1993	2330600
1994	2333900
1995	2337200
1996	2340500
1997	2343800
1998	2347100
1999	2350400
2000	2354000
2001	2355000
2002	2335000
2003	2315000
2004	2300000
2005	2280000
2006	2260000
2007	2240000
2008	2220000
2009	2200000
2010	2180000
2011	2162700
2012	2118000
2013	2114000
2014	2113700
2015	2113700
2016	2113700
2017	2113700
2018	2113700
2019	2113700
2020	2113700
2021	2113700