Year	hectares
1961	158392
1962	148791
1963	130596
1964	200536
1965	173582
1966	188809
1967	170175
1968	170386
1969	165791
1970	173107
1971	167711
1972	145418
1973	163729
1974	193154
1975	219368
1976	183009
1977	220640
1978	200459
1979	176562
1980	184953
1981	183342
1982	192061
1983	170727
1984	197076
1985	180084
1986	184016
1987	175254
1988	171509
1989	170863
1990	129883
1991	165638
1992	181580
1993	193636
1994	193192
1995	228193
1996	232964
1997	232531
1998	210896
1999	225034
2000	186407
2001	201357
2002	178739
2003	211355
2004	197029
2005	186061
2006	174706
2007	182340
2008	196874
2009	221315
2010	224751
2011	236187
2012	231242
2013	264168
2014	284623
2015	288778
2016	251497
2017	269898
2018	256343
2019	275975
2020	284281
2021	253362
2022	251732