Year	kilograms per hectare of arable land
1998	0.12254901960784313
1999	0.36764705882352944
2000	0.36764705882352944
2001	0.36764705882352944
2002	3.903186274509804
2003	1.4110429447852761
2004	3.204907975460123
2005	1.9115479115479115
2006	2.846248462484625
2007	2.465
2008	0.28625
2009	1.59
2010	4.43375
2011	6.605
2012	15.0339625
2013	10.8612125
2014	6.138662499999999
2015	13.7351875
2016	26.1067125
2017	25.036862499999994
2018	40.012025
2019	25.5051875
2020	3.72615
2021	3.72615