Year	hectares
1961	5195460
1962	5110820
1963	4985020
1964	5122420
1965	5215260
1966	5254020
1967	5551900
1968	5588250
1969	5615430
1970	5625250
1971	5796990
1972	5549730
1973	6257620
1974	6651940
1975	6871710
1976	6890000
1977	6775860
1978	6830430
1979	6851880
1980	6707820
1981	6811530
1982	6403110
1983	6414370
1984	6449370
1985	6913710
1986	6966010
1987	6938690
1988	7137905
1989	7186639
1990	7138449
1991	7017668
1992	6531837
1993	6434213
1994	6661655
1995	6454283
1996	6691299
1997	6571201
1998	5526969
1999	6642553
2000	6548909
2001	6552289
2002	6441894
2003	6416363
2004	6653886
2005	6512315
2006	6730683
2007	6921286
2008	7121079
2009	7216272
2010	6853269
2011	7081336
2012	7284199
2013	7309980
2014	7351234
2015	7218290
2016	7040630
2017	7364502
2018	7311944
2019	7168316
2020	7272792
2021	7369563
2022	7330074