Year	hectares
1961	154875
1962	131626
1963	131758
1964	161125
1965	155437
1966	130234
1967	147828
1968	150647
1969	145915
1970	130705
1971	137585
1972	145940
1973	132440
1974	149840
1975	143000
1976	140410
1977	137950
1978	124770
1979	121390
1980	130970
1981	133470
1982	122010
1983	134030
1984	105800
1985	107500
1986	116199
1987	115416
1988	108570
1989	114820
1990	113760
1991	104882
1992	104906
1993	98523
1994	97556
1995	98728
1996	94445
1997	95000
1998	100683
1999	73742
2000	74846
2001	98436
2002	100800
2003	92430
2004	89130
2005	104210
2006	102192
2007	103000
2008	81533
2009	80971
2010	79358
2011	74544
2012	82891
2013	80572
2014	75847
2015	64622
2016	54248
2017	54361
2018	61213
2019	50801
2020	64372
2021	80023
2022	63107