Year Hectares 1990 131000 1991 131000 1992 131000 1993 131000 1994 131000 1995 131000 1996 131000 1997 131000 1998 131000 1999 131000 2000 131000 2001 132100 2002 133200 2003 134300 2004 135400 2005 136500 2006 136580 2007 136660 2008 136740 2009 136820 2010 136900 2011 136980 2012 137060 2013 137140 2014 137220 2015 137300