Year	kilograms per hectare of arable land
1992	101.08520179372198
1993	60.928705440900565
1994	43.92307692307692
1995	32.036613272311214
1996	25.081447963800905
1997	31.311936936936938
1998	36.52423900789177
1999	31.769499417927822
2000	41.54804270462633
2001	43.88330871491876
2002	44.01401564537158
2003	71.64954128440367
2004	84.30964760254189
2005	60.95133491044272
2006	75.65372920765516
2007	75.87185049224095
2008	100.36299765807962
2009	69.4131455399061
2010	68.38914728682171
2011	71.5180265654649
2012	81.07010475423046
2013	82.35579937304075
2014	85.34097859327217
2015	82.6725925925926
2016	79.29310344827586
2017	87.93519882179676
2018	88.38799414348463
2019	90.27391304347826
2020	94.77953890489914
2021	103.49428571428571