Year kilograms per hectare of arable land 1992 99.5260663507109 1993 56.49081209247184 1994 55.73099415204678 1995 21.956087824351297 1996 23.58490566037736 1997 32.53012048192771 1998 46.45892351274787 1999 55.19452887537994 2000 51.84432989690722 2001 59.14926931106472 2002 45.67420349434738 2003 61.4748275862069 2004 59.97918731417245 2005 68.04029304029304 2006 62.655601659751035 2007 67.72474747474747 2008 66.94700854700855 2009 64.88356164383562 2010 77.64791133844842 2011 83.23229706390327 2012 91.56536502546689 2013 100.65645695364239 2014 101.12406947890818 2015 104.75931045698488 2016 104.19254658385093 2017 103.48449612403101 2018 101.15289575289576 2019 105.57012888551934 2020 113.42653673163419 2021 111.81497797356828