Year	hectares
1961	180255
1962	184650
1963	175300
1964	174285
1965	173683
1966	171400
1967	168900
1968	169410
1969	175385
1970	171620
1971	173480
1972	181000
1973	178550
1974	179739
1975	177804
1976	175600
1977	172310
1978	173410
1979	172300
1980	170665
1981	174510
1982	175930
1983	177400
1984	181440
1985	184315
1986	188560
1987	186190
1988	196510
1989	208040
1990	211903
1991	208670
1992	201240
1993	201800
1994	208990
1995	205248
1996	196438
1997	186373
1998	186867
1999	182256
2000	182671
2001	179576
2002	173482
2003	166558
2004	161753
2005	167689
2006	164346
2007	157777
2008	156315
2009	152956
2010	151628
2011	145386
2012	147041
2013	145871
2014	141145
2015	141474
2016	144314
2017	143615
2018	141355
2019	141771
2020	144884
2021	142099
2022	142274