Year	kilograms per hectare of arable land
1976	55.13151481428129
1977	68.28458095288936
1978	75.80973635076452
1979	84.53227738094445
1980	96.00850719672287
1982	96.0442140841319
1983	99.48664658227193
1984	107.39224263895827
1985	94.53814652151678
1992	103.42638285291399
1993	93.98460946594346
1994	97.10503139290563
1995	109.95160953960045
1996	115.45543767014287
1997	115.4325729218191
1998	117.7912007851054
1999	118.5258708500287
2000	115.00386507485933
2001	118.89550200928784
2002	129.45477135320746
2003	132.26862778906377
2004	143.77417478378933
2005	143.03472092409658
2006	146.8092041940171
2007	157.26275658896608
2008	150.74816083137935
2009	147.28953300518515
2010	165.54889762763992
2011	177.44688788849234
2012	178.55241308395108
2013	182.9902777103051
2014	189.9269350390424
2015	182.36815162253703
2016	184.5270219207501
2017	189.53368093774012
2018	186.35850763063993
2019	171.80567557964238
2020	181.5002715244141
2021	183.19874376221284