Year	hectares
1961	7708027
1962	7652725
1963	8440920
1964	8994221
1965	9350458
1966	10068011
1967	9529213
1968	9735738
1969	9273880
1970	9739619
1971	9677067
1972	9510017
1973	9898325
1974	9058706
1975	9527778
1976	9525942
1977	10097560
1978	9850363
1979	7791365
1980	9535719
1981	10742116
1982	8385699
1983	10387630
1984	10099758
1985	11272323
1986	9735910
1987	10205982
1988	9682610
1989	9746785
1990	10543921
1991	9754127
1992	9928776
1993	9547837
1994	10646413
1995	10669738
1996	11481873
1997	10477310
1998	11035270
1999	10130919
2000	10139789
2001	10878644
2002	9877131
2003	10572308
2004	10496782
2005	9282902
2006	10007761
2007	10233546
2008	10459480
2009	9111485
2010	9975294
2011	8766907
2012	9733658
2013	9805578
2014	10197589
2015	10000892
2016	10260493
2017	9865991
2018	9426335
2019	9058298
2020	9555894
2021	9431131
2022	9122008