Year	kilograms per hectare of arable land
1961	195.28919860627178
1962	195.0801547816473
1963	205.5257731958763
1964	203.15474571661682
1965	211.82722441749556
1966	227.3620972146368
1967	257.9696264878916
1968	246.7088085749622
1969	226.67876588021778
1970	266.6431990988454
1971	273.2613572630398
1972	243.06354327395147
1973	264.53710247349824
1974	238.24819583981886
1975	264.9585092444315
1976	279.80852915578765
1977	290.275971680393
1978	298.87543252595157
1979	327.2807145995021
1980	296.90662041052326
1981	333.14029245692774
1982	368.14696947779544
1983	379.33033773010584
1984	374.16931522681307
1985	359.9427753934192
1986	381.8443804034582
1987	358.1831290555155
1988	357.5370316584374
1989	374.66427931960607
1990	360.7250755287009
1991	330.5923557179839
1992	305.61489166920967
1993	340.66655721556396
1994	375.4017932667907
1995	369.10377358490564
1996	389.63594621187275
1997	356.46984924623115
1998	332.8002558771789
1999	337.33310799391586
2000	300.20422055820285
2001	330.914882321713
2002	323.36674732111993
2003	315.95688284149145
2004	305.5507819212923
2005	291.84849013789494
2006	256.4817853626518
2007	254.56039441248973
2008	256.6194837635304
2009	212.4318069102331
2010	243.04857621440536
2011	246.94820191355987
2012	232.93625241468126
2013	233.0258243687554
2014	247.8543354455763
2015	252.37065380136417
2016	247.75927622429467
2017	248.56649303288833
2018	245.61977786763407
2019	245.00466544095318
2020	233.16876926130428
2021	240.93962994667945