Year	Hectares
1990	436000
1991	436000
1992	436000
1993	436000
1994	436000
1995	436000
1996	436000
1997	436000
1998	436000
1999	436000
2000	436000
2001	436000
2002	436000
2003	436000
2004	436000
2005	436000
2006	436000
2007	436000
2008	436000
2009	436000
2010	436000
2011	431000
2012	426000
2013	421000
2014	416000
2015	411000