Year	kilograms per hectare of arable land
2009	1.3550000000000002
2010	2.745
2012	78.18499999999999
2013	1.16
2014	3.95
2015	3.1850000000000005
2016	2.71
2017	2.4850000000000003
2018	1.3750000000000002
2019	1.345
2020	0.7
2021	3.855