Year	Hectares
1990	548000
1991	548000
1992	548000
1993	548000
1994	548000
1995	548000
1996	548000
1997	548000
1998	548000
1999	548000
2000	548000
2001	543600
2002	539200
2003	534800
2004	530400
2005	526000
2006	526000
2007	526000
2008	526000
2009	526000
2010	526000
2011	526000
2012	526000
2013	526000
2014	526000
2015	526000