Year	% of fertilizer production
1961	127.4619743098333
1962	129.53002308353535
1963	140.70891514500536
1964	139.19386992930484
1965	148.09126798151843
1966	159.8890578962484
1967	158.52154242122515
1968	175.59398015991925
1969	165.49480114721055
1970	178.993421477858
1971	169.4183916808052
1972	191.20057123718104
1973	186.76949430083874
1974	182.97180858753794
1975	188.2572280508636
1976	191.68970031277792
1977	195.8530457856819
1978	200.9722051401537
1979	203.01532399196745
1980	189.03322203375103
1981	164.6721014409645
1982	155.59919529795297
1983	137.7987873327249
1984	145.79163883158117
1985	141.70851080016362
1986	155.02654944486775
1987	155.28969927487398
1988	150.3033298539882
1989	136.6792491806383
1990	146.54728180647592
1991	138.85859743816326
1992	154.18871189032328
1993	166.31241609985815
1994	167.24155210955138
1995	145.05899638288602
1996	163.65082516905798
1997	181.29404672052547
1998	188.2417635168954
1999	187.7812079123656
2000	208.11194654988657
2001	221.36885385896935
2002	234.35253525841583
2003	262.85545925796254
2004	270.6600132136155
2005	234.25224192228933
2006	249.01291873518693
2007	286.28626700947075
2008	253.03967884818323
2009	210.78286714826518
2010	228.37850836807658
2011	261.99970026964223
2012	253.19684848923237
2013	294.5768857655914
2014	313.986075215947
2015	270.83674415856314
2016	307.2327721038612
2017	353.7824839491606
2018	371.21905774842384
2019	425.7372901289927
2020	462.36680775176063
2021	495.5692686799824