Year	kilograms per hectare of arable land
1982	139.34181610561083
1983	146.05276099380308
1992	126.32110693968312
1993	129.84838687498862
1994	131.50321343624904
1995	133.14032371580612
1996	137.75343974017144
1997	137.14375116111606
1998	135.2652948189713
1999	134.26843234683562
2000	128.19578524265808
2001	129.07775177728428
2002	129.7377570193687
2003	138.4408874860015
2004	135.2276078193785
2005	131.69350391002473
2006	133.83776568264517
2007	139.2350742025093
2008	116.26189398198638
2009	117.03122956134453
2010	130.28330254248678
2011	131.49038161294953
2012	136.45808640248498
2013	138.73236848602212
2014	136.90684619643358
2015	138.00705857648964
2016	137.73189727853986
2017	139.43999847876384
2018	139.9339017457696
2019	138.07301921435698
2020	142.09033520439849
2021	138.71124135921875