Year	hectares
1961	228117
1962	229522
1963	232243
1964	242754
1965	240291
1966	232131
1967	228473
1968	232640
1969	244494
1970	257570
1971	267823
1972	271840
1973	279861
1974	290986
1975	299491
1976	297885
1977	302227
1978	306083
1979	310432
1980	315767
1981	306351
1982	320448
1983	321524
1984	328430
1985	335080
1986	341100
1987	336920
1988	343270
1989	346036
1990	356391
1991	369088
1992	359373
1993	352662
1994	348626
1995	338090
1996	334140
1997	332100
1998	339054
1999	329400
2000	332093
2001	329167
2002	327030
2003	326675
2004	328265
2005	325212
2006	318183
2007	311905
2008	309021
2009	306092
2010	301136
2011	298750
2012	294212
2013	286057
2014	283748
2015	282717
2016	285066
2017	286602
2018	279763
2019	275257
2020	279965
2021	283168
2022	280246