Year Hectares 1990 472000 1991 476600 1992 481200 1993 485800 1994 490400 1995 495000 1996 499600 1997 504200 1998 508800 1999 513400 2000 518000 2001 522600 2002 527200 2003 531800 2004 536400 2005 541000 2006 545400 2007 549800 2008 554200 2009 558600 2010 563000 2011 567600 2012 572200 2013 576800 2014 581400 2015 586000