Year	% of fertilizer production
1961	1420
1962	650
1963	315.55075593952483
1964	283.4643039220857
1965	278.1026088065826
1966	329.68328756078506
1967	298.95833333333337
1968	303.9864587607715
1969	237.7269806918473
1970	164.14920588001226
1971	191.07976351000931
1972	176.00392524959466
1973	165.26788138990548
1974	160.02612671456563
1975	212.6156824399735
1976	248.53703123895326
1977	240.46052631578948
1978	265.3849309448927
1979	305.7913848623359
1980	356.5068493150685
1981	305.3435114503817
1982	385.0253807106599
1983	351.75400702267416
1984	257.5527198317513
1985	252.96990267724172
1986	243.3420467185762
1987	272.6133292484107
1988	269.44264675705966
1989	262.40340340340344
1990	303.1202818319074
1991	310.37687145069697
1992	318.62928348909657
1993	545.4449152542372
1994	471.8483412322275
1995	476.6666666666667
1996	407.563025210084
1997	548.4729064039409
1998	582.5024437927664
1999	690.9198113207548
2000	208.621236133122
2001	676.2243027366767
2002	818.463497142857
2003	818.1017907227616
2004	620.9547256097561
2005	830.2548383500557
2006	709.2293244444444
2007	686.1438715277778
2008	615.4495424292845
2009	475.33208242950116
2010	489.68458987783595
2011	605.824947643979
2012	559.9025317220543
2013	449.4787412587412
2014	428.6254126984127
2015	427.86757600657353
2016	464.35339316239316
2017	504.0084981226534
2018	436.9538578487267
2019	437.53281237281243
2020	509.4256793703397
2021	508.00164043082015