Year	hectares
1961	521762
1962	509284
1963	488375
1964	481317
1965	484309
1966	462031
1967	437597
1968	419849
1969	406193
1970	361706
1971	349841
1972	331160
1973	292920
1974	260522
1975	244365
1976	240089
1977	235132
1978	234679
1979	237843
1980	224137
1981	213336
1982	204629
1983	206110
1984	195732
1985	183399
1986	170284
1987	176363
1988	197166
1989	202644
1990	198596
1991	189604
1992	180938
1993	183300
1994	189100
1995	193700
1996	200100
1997	202100
1998	204926
1999	183084
2000	219100
2001	229600
2002	226310
2003	218598
2004	216753
2005	216383
2006	213220
2007	212300
2008	235591
2009	220796
2010	210419
2011	206349
2012	202572
2013	203420
2014	187410
2015	190986
2016	174263
2017	158359
2018	166380
2019	178170
2020	172280
2021	169720
2022	183200