Year	hectares
1961	504534
1962	567973
1963	598034
1964	650732
1965	640901
1966	591684
1967	706492
1968	587030
1969	614933
1970	595413
1971	612063
1972	626234
1973	494759
1974	495507
1975	542225
1976	564825
1977	461054
1978	330304
1979	396097
1980	414747
1981	444800
1982	418234
1983	358299
1984	442254
1985	431368
1986	817236
1987	853392
1988	845168
1989	819720
1990	802193
1991	663880
1992	918400
1993	970500
1994	991680
1995	958070
1996	1016054
1997	1043439
1998	759668
1999	869797
2000	817509
2001	865736
2002	845030
2003	785161
2004	892221
2005	810795
2006	805174
2007	867353
2008	767151
2009	822099
2010	879497
2011	954785
2012	899018
2013	939988
2014	875088
2015	824670
2016	705783
2017	742875
2018	687800
2019	604969
2020	686950
2021	734275
2022	722902