Year	Hectares
1990	4631000
1991	4621500
1992	4612000
1993	4602500
1994	4593000
1995	4583500
1996	4574000
1997	4564500
1998	4555000
1999	4545500
2000	4536000
2001	4526400
2002	4516800
2003	4507200
2004	4497600
2005	4488000
2006	4478200
2007	4468400
2008	4458600
2009	4448800
2010	4439000
2011	4622200
2012	4805400
2013	4988600
2014	5171800
2015	5355000