Year	Hectares
1990	31329000
1991	30779800
1992	30230600
1993	29681400
1994	29132200
1995	28583000
1996	28033800
1997	27484600
1998	26935400
1999	26386200
2000	25837000
2001	25287800
2002	24738600
2003	24189400
2004	23640200
2005	23091000
2006	22541800
2007	21992600
2008	21443400
2009	20894200
2010	20345000
2011	19795800
2012	19246600
2013	18697400
2014	18148200
2015	17599000