Year	hectares
1961	7138919
1962	7145685
1963	7168885
1964	7285822
1965	7229500
1966	7207233
1967	7286316
1968	7431223
1969	7499085
1970	7470600
1971	7571500
1972	7633527
1973	7662538
1974	7743113
1975	7805553
1976	7816354
1977	7800601
1978	7878846
1979	7723359
1980	7737979
1981	7614540
1982	7583943
1983	7582053
1984	7512692
1985	7403403
1986	7327154
1987	7157693
1988	7138343
1989	7087608
1990	6944862
1991	6559828
1992	6514452
1993	6223589
1994	6235406
1995	6526733
1996	6707371
1997	7014075
1998	7041633
1999	6634681
2000	7015690
2001	7045736
2002	6940982
2003	6839431
2004	6946946
2005	6839000
2006	6702200
2007	6571690
2008	7038419
2009	6908443
2010	6587482
2011	6490900
2012	6517900
2013	6526000
2014	6460700
2015	6517500
2016	6316300
2017	6266500
2018	6141600
2019	6372600
2020	6065200
2021	6053000
2022	6101400