Year	hectares
1961	297088
1962	302463
1963	277880
1964	267679
1965	317394
1966	334946
1967	323746
1968	340795
1969	318623
1970	342020
1971	350854
1972	346430
1973	329609
1974	350000
1975	395500
1976	372897
1977	389466
1978	414995
1979	433861
1980	427881
1981	405455
1982	368889
1983	364687
1984	374920
1985	385140
1986	389760
1987	415730
1988	417690
1989	411435
1990	425367
1991	446040
1992	486290
1993	457590
1994	451850
1995	438445
1996	409220
1997	445424
1998	415065
1999	380695
2000	361354
2001	397822
2002	328728
2003	320104
2004	330716
2005	339950
2006	334321
2007	328871
2008	357174
2009	362998
2010	355322
2011	370766
2012	392041
2013	384707
2014	403081
2015	373447
2016	390803
2017	354029
2018	343550
2019	331804
2020	333820
2021	321959
2022	358365