Year	kilograms per hectare of arable land
1961	10.942816297355254
1962	12.145049626957633
1963	14.860205907695027
1964	14.966790110009804
1965	15.698633240202371
1966	17.65290589671461
1967	20.474712691800466
1968	24.592644501278773
1969	25.62770479134467
1970	29.391515534148652
1971	30.521869316640373
1972	36.42576545917715
1973	39.099163193487556
1974	41.61931011154261
1975	42.19139343806026
1976	48.964911727812044
1977	54.10116437820901
1978	53.79465349396934
1979	56.64266905440575
1980	61.48500970299143
1981	51.56234075603876
1982	50.729380534430305
1983	45.304978280279244
1984	58.10144784357019
1985	57.505408604084245
1986	67.12128541562008
1987	69.80415889353861
1988	68.1541557813044
1989	64.22838490069934
1990	62.358486554058345
1991	60.99316769286744
1992	61.69860450039501
1993	69.4984295430756
1994	75.37574295506352
1995	68.60913732828844
1996	82.0559074811334
1997	89.75383700286885
1998	89.24194231682556
1999	88.5643861855359
2000	95.27932612366028
2001	98.53468996910954
2002	100.51648988085782
2003	111.43049362407149
2004	129.24467505038322
2005	106.87364305387221
2006	111.26159096959496
2007	132.78007261825618
2008	119.74978823280466
2009	93.49297088396908
2010	121.33600413279471
2011	144.07724793101895
2012	134.6512508886488
2013	150.3395186275875
2014	158.97534140503748
2015	135.72734276472096
2016	145.6093010809861
2017	162.57371817405826
2018	169.83040618478267
2019	167.91699356402853
2020	194.844138269642
2021	203.20504464328616