Year	kilograms per hectare of arable land
1992	13.550135501355014
1993	9.246575342465754
1994	3.488740881699968
1995	2.736450967119381
1996	3.9687829469576705
1997	1.7234070005345326
1998	0.40429422667844306
1999	1.0668729703677593
2000	1.2268189248424202
2001	1.7166387939931267
2002	0.8360997534034904
2003	1.1903921873015424
2004	1.4782926246892425
2005	1.4284563918171855
2006	1.4467430807939614
2007	2.056478080527352
2008	1.083457808259525
2009	1.970773843218651
2010	2.046032952398218
2011	2.9955518392356564
2012	4.420250575300435
2013	2.8885819552504364
2014	3.952704766170572
2015	4.2954484799551365
2016	3.840255783983645
2017	5.3345813804498095
2018	4.053713526959795
2019	2.917392088718544
2020	5.574692419095055
2021	4.445612864302639