Year	hectares
1961	7029100
1962	6663626
1963	6708715
1964	6692900
1965	6766565
1966	6820400
1967	6603919
1968	6657193
1969	6563321
1970	5900835
1971	6167400
1972	6238400
1973	5792500
1974	5903100
1975	6239764
1976	6350600
1977	6308075
1978	6317548
1979	6320028
1980	6468635
1981	6232071
1982	6022783
1983	6052926
1984	6273030
1985	6285900
1986	6200700
1987	5987000
1988	5905300
1989	6027200
1990	5704048
1991	6048950
1992	5773881
1993	6394957
1994	6557564
1995	6444844
1996	5842791
1997	6242477
1998	5847386
1999	5344034
2000	5435021
2001	6229224
2002	5714012
2003	5114461
2004	6103949
2005	5802854
2006	5079834
2007	4750134
2008	5181667
2009	5265063
2010	5019319
2011	5219738
2012	5424635
2013	5409272
2014	5423895
2015	5455244
2016	5480496
2017	5191407
2018	5261270
2019	5572530
2020	5341510
2021	5356960
2022	5189930