Year	kilograms per hectare of arable land
1961	85.33474218089603
1962	87.48277841561423
1963	100.84907379289402
1964	114.8221198156682
1965	122.37772856690921
1966	125.37278867803153
1967	138.53165374677002
1968	150.68814007267923
1969	155.05866928875778
1970	164.8465070514923
1971	172.37774860518542
1972	171.34621737694087
1973	188.4422694094227
1974	160.63084577114427
1975	174.86608927381747
1976	177.3894631543848
1977	176.438127090301
1978	174.65987983978638
1979	170.13351224421336
1980	162.63361344537816
1981	164.2033152909337
1982	162.71249151391717
1983	163.87504256043582
1984	155.83919426425402
1985	143.72069910897875
1986	139.65117079889808
1987	138.93347193347194
1988	127.26638772663877
1989	124.48999648999649
1990	115.54311862020415
1991	104.80516684607105
1992	113.63508137432189
1993	118.5631976953547
1994	116.31220741807707
1995	106.39182344428365
1996	110.55784976860093
1997	110.87160228898426
1998	105.7259978425027
1999	105.69533527696792
2000	108.67618204901319
2001	99.18321636553681
2002	100.73460161989075
2003	99.14445790430042
2004	98.23487167857277
2005	88.12474414796621
2006	86.5998865998866
2007	89.72410123888424
2008	99.59077523234023
2009	64.16257563648819
2010	82.05491483999083
2011	85.40493836642219
2012	76.23101241421853
2013	84.67175560723474
2014	93.06397802172253
2015	96.89304478504499
2016	97.89163074236625
2017	104.96819706392287
2018	100.66640702756501
2019	97.6894792372014
2020	116.96952984971736
2021	117.12547876473766