Year	hectares
1961	1024480
1962	1013290
1963	991550
1964	987443
1965	957810
1966	1009247
1967	968900
1968	1008340
1969	951251
1970	967700
1971	968330
1972	982070
1973	784560
1974	879200
1975	969970
1976	969130
1977	928550
1978	855960
1979	883810
1980	852020
1981	723930
1982	656950
1983	635460
1984	782360
1985	800220
1986	797180
1987	874770
1988	792720
1989	804080
1990	823447
1991	706970
1992	694330
1993	622470
1994	583380
1995	618407
1996	604456
1997	682719
1998	613235
1999	533827
2000	593690
2001	631247
2002	652128
2003	685127
2004	706925
2005	686445
2006	594456
2007	497056
2008	565044
2009	572191
2010	526524
2011	570215
2012	556184
2013	579184
2014	567641
2015	534984
2016	564637
2017	512101
2018	512533
2019	460545
2020	442145
2021	467709
2022	423377