Year	hectares
1961	75000
1962	75000
1963	75000
1964	75000
1965	75000
1966	80000
1967	85000
1968	85000
1969	91000
1970	102000
1971	108000
1972	114000
1973	120000
1974	126000
1975	132000
1976	138000
1977	144000
1978	160000
1979	165000
1980	167000
1981	172000
1982	175000
1983	179000
1984	180000
1985	183000
1986	185000
1987	186000
1988	188000
1989	190000
1990	192000
1991	192000
1992	192000
1993	193000
1994	193000
1995	194000
1996	195000
1997	197000
1998	199000
1999	203000
2000	205000
2001	210000
2002	220000
2003	225000
2004	230000
2005	240000
2006	258000
2007	263000
2008	295000
2009	300000
2010	300000
2011	300000
2012	300000
2013	300000
2014	315000
2015	320000
2016	326000
2017	330000
2018	330000
2019	329000
2020	331000
2021	331000