Year	hectares
1961	22506121
1962	23139749
1963	23521897
1964	23682246
1965	24774354
1966	22626585
1967	24016425
1968	23358857
1969	27551782
1970	25652987
1971	25022578
1972	21520832
1973	25192236
1974	24009119
1975	22091216
1976	24057598
1977	22178287
1978	21076038
1979	21016349
1980	22014894
1981	19920623
1982	20578251
1983	21373022
1984	23574750
1985	26006920
1986	29387071
1987	29871895
1988	31494026
1989	33706876
1990	35323092
1991	37573188
1992	38657982
1993	39273528
1994	40620092
1995	41027229
1996	39280226
1997	39434016
1998	41026006
1999	40760122
2000	40153102
2001	40137487
2002	41805594
2003	43087394
2004	41724131
2005	44940649
2006	46887570
2007	47291663
2008	49564067
2009	43811763
2010	51101391
2011	48733493
2012	50541827
2013	51717446
2014	52658144
2015	52320543
2016	55886191
2017	57329339
2018	58485626
2019	56473719
2020	57238802
2021	57415007
2022	58482771