Year	hectares
1961	12220000
1962	12185000
1963	12165000
1964	12161000
1965	12153000
1966	12155000
1967	12049000
1968	12032000
1969	12001000
1970	11952000
1971	11965000
1972	12004000
1973	11990000
1974	12020000
1975	12041000
1976	12087000
1977	12071000
1978	12086000
1979	12057000
1980	12030000
1981	12004000
1982	11975000
1983	11967000
1984	11952000
1985	11957000
1986	11960000
1987	11945000
1988	11948000
1989	11949000
1990	11971000
1991	11559000
1992	11467000
1993	11676000
1994	11805000
1995	11835000
1996	11835000
1997	11832000
1998	11879000
1999	11822000
2000	11804000
2001	11813000
2002	11791000
2003	11827000
2004	11898000
2005	11904000
2006	11866000
2007	11877000
2008	11932000
2009	11945000
2010	11846000
2011	11875000
2012	11834000
2013	11876000
2014	11869000
2015	11846000
2016	11763000
2017	11772000
2018	11731000
2019	11714000
2020	11664000
2021	11658000