Year kilograms per hectare of arable land 1992 229.28994082840237 1993 123.19790301441678 1994 86.74698795180723 1995 83.9216944801027 1996 124.71910112359551 1997 138.46153846153845 1998 149.5070308711815 1999 127.9521190553219 2000 131.2571335398663 2001 131.92154139906268 2002 135.98646723646723 2003 135.62578559885077 2004 146.91780821917808 2005 167.70119090581017 2006 231.96750902527077 2007 218.35477441565502 2008 237.41841914430748 2009 281.11471861471864 2010 270.46070460704607 2011 303.88858744800143 2012 271.38609199565377 2013 256.3429681457633 2014 215.22456332456156 2015 194.18659949977103 2016 146.61863541996553 2017 142.44630696699843 2018 156.1857492997199 2019 153.88027306143883 2020 180.72826855123674 2021 169.36770981507823