Year	hectares
1961	2000
1962	2000
1963	2000
1964	2000
1965	2000
1966	2000
1967	2000
1968	2000
1969	2000
1970	2000
1971	2000
1972	2000
1973	2000
1974	2000
1975	2000
1976	2000
1977	2000
1978	2000
1979	2000
1980	2000
1981	2000
1982	2000
1983	2000
1984	2000
1985	2000
1986	2000
1987	2000
1988	2000
1989	2000
1990	2000
1991	2000
1992	2000
1993	2000
1994	3000
1995	3000
1996	3000
1997	3000
1998	3000
1999	3000
2000	3000
2001	3000
2002	3000
2003	3000
2004	3000
2005	3000
2006	3000
2007	3000
2008	3000
2009	2500
2010	2500
2011	2500
2012	2500
2013	2500
2014	2500
2015	2500
2016	2500
2017	2500
2018	2500
2019	2500
2020	2500
2021	2500