Year	kilograms per hectare of arable land
1992	56.92459397812723
1993	43.73290378962773
1994	29.572482730404918
1995	29.96343130629547
1996	30.500289765541066
1997	32.20312827107695
1998	31.320036890556132
1999	30.11692858974184
2000	31.158211108162508
2001	30.580848550162504
2002	31.100524388597083
2003	32.898330605319885
2004	33.13310154740977
2005	35.90635488580603
2006	40.11193333952119
2007	42.841829466285134
2008	42.05353763249391
2009	44.219615110025224
2010	45.3791210876732
2011	46.97324834372208
2012	47.26499805694448
2013	49.138221255405
2014	47.180976015951316
2015	48.420739539231754
2016	52.99626944812003
2017	54.438320180270104
2018	52.51579604837586
2019	56.10162721840415
2020	61.94362868420612
2021	60.203069525998814