Year	hectares
1961	16000
1962	16000
1963	16000
1964	16000
1965	16000
1966	16000
1967	16000
1968	16000
1969	16000
1970	16000
1971	16000
1972	16000
1973	16000
1974	16000
1975	16000
1976	16000
1977	16000
1978	16000
1979	16000
1980	16000
1981	16000
1982	16000
1983	16000
1984	16000
1985	16000
1986	16000
1987	16000
1988	16000
1989	16000
1990	16000
1991	16000
1992	16000
1993	16000
1994	16000
1995	16000
1996	16000
1997	16000
1998	16000
1999	15000
2000	15000
2001	15000
2002	14000
2003	14000
2004	13000
2005	13000
2006	13000
2007	13000
2008	13000
2009	13000
2010	12000
2011	11000
2012	10000
2013	9500
2014	9000
2015	8000
2016	7000
2017	7000
2018	7000
2019	7000
2020	7000
2021	7000