Year	hectares
1961	273500
1962	273600
1963	287289
1964	294300
1965	305300
1966	311500
1967	311619
1968	378866
1969	323918
1970	339000
1971	428283
1972	153949
1973	200715
1974	411165
1975	345154
1976	428044
1977	391414
1978	404923
1979	437890
1980	453072
1981	274344
1982	261949
1983	316424
1984	446241
1985	630297
1986	640821
1987	713448
1988	894572
1989	962137
1990	974551
1991	1088941
1992	1121897
1993	1130013
1994	1068834
1995	705226
1996	563212
1997	656378
1998	621825
1999	686373
2000	616368
2001	659115
2002	704804
2003	697306
2004	682180
2005	632549
2006	602875
2007	577940
2008	465724
2009	325371
2010	284169
2011	257875
2012	210023
2013	164474
2014	302139
2015	289608
2016	277005
2017	265312
2018	245988
2019	244295
2020	259567
2021	185646
2022	213661