Year	Hectares
1990	4817000
1991	4725300
1992	4633600
1993	4541900
1994	4450200
1995	4358500
1996	4266800
1997	4175100
1998	4083400
1999	3991700
2000	3900000
2001	3847200
2002	3794400
2003	3741600
2004	3688800
2005	3636000
2006	3636000
2007	3636000
2008	3636000
2009	3636000
2010	3636000
2011	3636000
2012	3636000
2013	3636000
2014	3636000
2015	3636000