Year	kilograms per hectare of arable land
1992	41.739894551845346
1993	29.728728249625593
1994	11.758109981155878
1995	13.72549019607843
1996	12.537294483590427
1997	12.160105439882008
1998	10.02124758189833
1999	10.890178035607121
2000	11.417177223535466
2001	12.939609236234459
2002	11.492900822095331
2003	11.003516673602102
2004	11.419776333240549
2005	11.792644172736304
2006	12.48071133630546
2007	14.253129781038709
2008	15.882744617711612
2009	15.635064817631052
2010	15.724502462001333
2011	16.18722718641337
2012	15.43358350664617
2013	15.298276188049224
2014	15.900500620638065
2015	16.66261128328223
2016	18.68718197436888
2017	20.328288765217962
2018	20.81411273417784
2019	22.59144752525709
2020	25.327811983657902
2021	25.327811983657902